Relevant bibliographies by topics / Holy Shroud

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Holy Shroud'

Author: Grafiati
Published: 4 June 2021
Last updated: 29 July 2024

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Journal articles on the topic "Holy Shroud"

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Schrag, Bettina, Sophie Pitteloud, Beat Horisberger, Tony Fracasso, and Patrice Mangin. "The modern holy shroud." Forensic Science International 219, no. 1-3 (June 2012): e10-e12. http://dx.doi.org/10.1016/j.forsciint.2011.11.025.

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Casey, Michael T. "The Holy Shroud of Turin." Irish Theological Quarterly 56, no. 1 (March 1990): 60–62. http://dx.doi.org/10.1177/002114009005600105.

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Schiltz, Katelijne. "Adrian Willaert’s Hymn for the Holy Shroud." Journal of the Alamire Foundation 4, no. 1 (January 2012): 57–72. http://dx.doi.org/10.1484/j.jaf.1.102607.

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Modarelli, Giuseppe. "Accounting and the budget negotiation process: The case of the Holy Shroud Exposition (1931) during a period of austerity." CONTABILITÀ E CULTURA AZIENDALE, no. 2 (July 2022): 7–53. http://dx.doi.org/10.3280/cca2021-002002.

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Introduction: The paper considers the case of the Holy Shroud Exposition (1931) during a period of austerity, investigating accounting practices and the budget negotiation process. Aim of the work: The study seeks to illustrate the power structure underpinning budgetary negotiation processes related to the Holy Shroud Exposition. Methodological approach: The paper is based upon primary sources, considering internal accounting correspondence of the Savoy Ministry and other archival sources that have been interpreted in the light of the literature on the principal-agent theory used as framing paradigm. Main findings: The research identifies the role of accounting in managing/influencing social organisational-interactions, under specific historical conditions. In particular, the work shows the hierarchical structure of the Savoy Royal House (hereafter HSE), and verify the presence of opportunistic behaviours in the negotiation process realated to the authorisation of extraordinary expenses for the Holy Shroud Exposition. Originality: The paper permits to show the power of accounting to shape human interactions in the specific context represented by the climate of austerity, typical of interwar periods, that becomes a crucial antecedent of opportunistic behaviours.
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FAZIO, Giovanni. "A THEOLOGICAL SUPPORT, FROM CHALCEDON, TO THE SHROUD IMAGE NATURAL FORMATION." International Journal of Theology, Philosophy and Science 5, no. 8 (May 27, 2021): 42–48. http://dx.doi.org/10.26520/ijtps.201.5.8.42-48.

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The fourth Ecumenical Council of Chalcedon (451 AD) sanctions, for the Holy Church very important conclusions regarding the nature of Christ. The above results do not contrast, but rather open to a natural formation of the Shroud body image. This occurs because it was affirmed in Chalcedon that Jesus Christ, the Nazarene, has two natures, one human and one divine, “inconfusedly, unchangeably, indivisibly, inseparably”, which coexist in one person (hypostasis). Consequently, the monophysitism of Eutiche and of the Egyptian, Syrian and Armenian Churches, was rejected. Now, the Resurrection of the Nazarene is a Transcendental event that, according to those like us who support the natural formation of the Shroud body image, acted only on the corpse leaving the burial linen in the Immanent, under the dominion of the natural sciences. So, the Miracle of the Resurrection shows the divine nature of Christ, while the Shroud body image formation, the human one.
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Smith, Samantha L. "Truth and the Transunto: a copy of the Holy Shroud in Sixteenth-Century Bologna." Acta ad archaeologiam et artium historiam pertinentia 32, no. 18 N.S. (September 13, 2021): 59–80. http://dx.doi.org/10.5617/acta.9019.

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'Truth and the transunto' investigates the use of a hand-painted copy of the Holy Shroud which found its way to Bologna in the late sixteenth century. Used by the archbishop of Bologna, Alfonso Paleotti (1531-1610), this copy was the source of observations of the body of Christ, in the manner of an autopsy and is presented in Paleotti's book Esplicatione del Lenzuolo [...]. Early modern copies of the Holy Shroud are not however accurate copies, but present seemingly simplified replicas of the original. This article explores how such information, and indeed, level of trust, can come from these copies, which, to the modern eye, seem fallible. Previous studies have excused the strange appearance of these Shroud copies by considering them solely devotional instruments yet as the article shows, Paleotti's use of such an object shows that the copies might be better understood in the context of early modern natural historical studies and illustrations. The article draws on scholarship which discusses the emerging interest for visual evidence in early scientific practice and shows how certain types of images and image-making practices were able to evoke the idea of presence and clarify the indecipherable. Demonstrating that Paleotti's copy of the Holy Shroud was not just a religious tool, but also an epistemic image, this article shows how Paleotti's use of the term 'transunto' could be used as a valuable tool in gaining a more nuanced understanding of the concept 'copy' in Early Modern Europe. On cover:ANNIBALE CARRACCI (BOLOGNA 1560 - ROME 1609), An Allegory of Truth and Time c. 1584-1585.Oil on canvas | 130,0 x 169,6 cm. (support, canvas/panel/str external) | RCIN 404770Royal Collection Trust / © Her Majesty Queen Elizabeth II 2021.
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Evseeva, L. M. "Movable icons and embroidery shrouds in services of dramatic character in Ancient Rus’." Journal of Visual Theology 5, no. 1 (2023): 22–45. http://dx.doi.org/10.34680/vistheo-2023-5-1-22-45.

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The Cycle of services of Novgorod Cathedral of the Holy Wisdom included sing-ing services (ᾀσματική ἀκολουθία) after the practice of the Hagia Sophia in Constantinople. Its description is known since the 13th century from the Novgorod liturgical manuscripts. Since the end of 15th century the double- sided proskynesis icons has been an important inte-gral part of singing service in Novgorod Cathedral. The unique complex of the images of the Saviour, Mother of God, saints, and the Bible scenes was created at this time. The complicated organization composition of the Novgorod series allowed to lay one icon in the church naos at festive day or to carry out all icons with images of saints to square near Cathedral during the rites of the New Year on September 1 and on Sunday of the Last Judgement. The icons replaced one another during the Holy Week. The Shroud with the embroidery image of dead Christ was carried out from altar and put on a table in the middle of naos at Holy Saturday. The icon Resurrection (Descent into Hell) replaced the Shroud at early morning of Resurrection Sunday. It was a real “mystery of images”.
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Napoli, Paolo. "A Structural Description of the Chapel of the Holy Shroud in Torino." Nexus Network Journal 11, no. 3 (November 5, 2009): 351–68. http://dx.doi.org/10.1007/s00004-009-0003-y.

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Giulio, Fanti. "New Insights on Blood Evidence from the Turin Shroud Consistent with Jesus Christ’s Tortures." Archives of Hematology Case Reports and Reviews 9, no. 1 (July 19, 2024): 001–15. http://dx.doi.org/10.17352/ahcrr.000044.

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After a critical revision of the main results obtained on the hematic material of the Holy Shroud in Turin, this paper presents various news of both a macroscopic and microscopic nature. At a macroscopic level, news regarding the directions and position of blood and the probable presence of pulmonary fluid are discussed. Also, the bloodstains on the left arm are examined to try to distinguish different kinds of hematic fluid. At a microscopic level, three different types of blood are evidenced. Hypotheses have been formulated to distinguish pre-mortem and post-mortem blood and to distinguish erythrocytes on the basis of their different sizes. The presence of fibrin, earthy material, creatinine typical of a tortured person, and the stacking of erythrocytes is also discussed along with their Beta-activity and fluorescence. Finally, the physical conditions relating to Jesus are discussed from a medical point of view which could explain all the news of the hematic material taken from the HST and are consistent with the tortures of Jesus Christ described in the Holy Bible.
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Bortolin, Michelangelo, Marco Ulla, Alessia Bono, Enrico Ferreri, Mariano Tomatis, and Sergio Sgambetterra. "Holy Shroud Exhibition 2010: Health Services During a 40-Day Mass-Gathering Event." Prehospital and Disaster Medicine 28, no. 3 (March 21, 2013): 239–44. http://dx.doi.org/10.1017/s1049023x13000216.

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AbstractIntroductionMass-gathering events require varying types and amounts of medical resources to deal with patient presentations as well as careful planning for environmental health management. The Holy Shroud Exhibition was hosted in Torino, Italy, between April and May 2010. The venue was a unique mass-gathering event which lasted several weeks. It was held in a limited area in the center of the city and it was attended by a large and heterogeneous population. A dedicated Health Care Service was created for the event.MethodsThis study is a retrospective analysis of clinical presentations of patients who were managed by the Medical Services during the event. The main study outcomes included Patient Presentation Rate (PPR), type of injuries and illnesses, and the Transport to Hospital Rate (TTHR).ResultsThe PPR and TTHR were both low (0.27 and 0.039 respectively). The majority of patients presented with low severity codes and no sudden cardiac death (SCD) or cardiac arrest occurred. Cardiac and trauma emergencies were most frequent categories of presentation. A number of pediatric patients (19.37%) were treated by the event Medical Service. Approximately two million persons participated in the 40-day event.ConclusionThe experience for this 40-day event supported having an on-site, organized, dedicated Medical Service that decreased overcrowding of the local Emergency Medical System and hospitals. It is recommended that, for such events, there be recruitment of emergency physicians with experience in mass-gathering events, recruitment of pediatricians, and training for professionals during the planning process.BortolinM, UllaM, BonoA, FerreriE, TomatisM, SgambetterraS. Holy Shroud Exhibition 2010: health services during a 40-day mass-gathering event. Prehosp Disaster Med. 2013;28(3):1-6.
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Dissertations / Theses on the topic "Holy Shroud"

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Louro, Rogério Filipe Agostinho. "Factores ambientais que afectam a riqueza específica de macrofungos em montados de azinho - implicações para a Gestão e Conservação." Master's thesis, Universidade de Évora, 2010. http://hdl.handle.net/10174/20755.

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A riqueza especifica de macrofungos e os mecanismos naturais que a influenciam são ainda pouco conhecidos. Foram utilizados modelos de regressão linear para inferir a relação existente entre a riqueza de macrofungos e diversas variáveis ambientais. De Novembro de 2005 a Abril de 2007 foram amostradas mensalmente as espécies de macrofungos presentes em montados de azinho (Quercus rotundifolia Lam.) no Parque de Natureza de Noudar (Alentejo, Portugal). Verificou-se que a riqueza de espécies micorrízicas aumenta com a classe etária das árvores e com a percentagem de coberto arbustivo, enquanto a riqueza de espécies sapróbias aumenta com as percentagens de cobertos arbustivo e herbáceo, sendo o coberto arbustivo relevante para ambos os grupos tróficos. Pelo exposto anteriormente, propomos que sejam mantidas faixas e pequenas manchas de vegetação arbustiva natural e que o controlo de matos seja efectuado de forma a manter intocada a rizosfera, maximizando desta forma a riqueza de macrofungos. ABSTRACT: Macrofungal richness is still poorly known and the natural mechanisms enhancing macrofungal diversity still remain unclear. We used linear regression models to infer the relationship between mushroom richness and several environmental variables. Therefore, a macrofungal inventory based on fruit bodies was conducted monthly, from November 2005 to April 2007, in holm oak stands (Quercus rotundifolia Lam.) on the Parque de Natureza de Noudar (Alentejo, Portugal). According to our results, mycorrhizal richness increases with tree age class and shrub cover, while saprotrophic richness increases with shrub cover and herbaceous cover. Although, mycorrhizal and saprotrophic richness models differed from each other, results seem to emphasize that shrubs are of the upmost importance for both mycorrhizal and saprotrophic macrofungi in holm oak stands. Thus we propose that strips and patches of natural shrubby vegetation should be maintained and shrub control methods should keep the rhizosphere intact in order to enhance macrofungal richness.
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Allen, Nicholas Peter Legh. "The methods and techniques employed in the manufacture of the Shroud of Turin." Thesis, 1993. http://hdl.handle.net/10413/8589.

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The main objective of the inquiry is to deduce the methods and techniques that were employed in the manufacture of the historically unique Shroud of Turin. By taking a more or less phenomenologically based stance, it is argued that this image could only have been produced by employing a photographically related technique. To this end, an examination is made of both the nature of the image, as well as all relevant documented evidence which supports the above stated hypothesis. In addition, practical experiments are conducted which employ the kinds of technology and apparatus known to have existed c 1250-1357 AD. The results of this investigation strongly support the notion that persons living c 1250- 1357 AD did in fact have the necessary technology to manufacture what could be termed a negative solargraphic image of a human subject.
Thesis (Ph.D.)-University of Durban-Westville, 1993.
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Books on the topic "Holy Shroud"

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Stevenson, Kenneth. The Shroud and the controversy. Nashville: T. Nelson, 1990.

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Nickell, Joe. Inquest on the Shroud ofTurin. Buffalo, N.Y: Prometheus Books, 1987.

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Wilcox, Robert K. The truth about the Shroud of Turin: Solving the mystery. Washington, D.C: Regnery Pub., Inc., 2010.

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Ian, Wilson. The evidence of the shroud. London: M. O'Mara Books, Ltd., 1986.

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Corsi, Jerome R. The Shroud codex. New York: Threshold Editions, 2010.

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Corsi, Jerome R. The Shroud codex. New York: Threshold Editions, 2010.

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Antonacci, Mark. The resurrection of the Shroud. New York: M. Evans, 2000.

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Antonacci, Mark. The resurrection of the shroud. Nashville, TN: J.S. Sanders, 1998.

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Navaratne, Louis-Marie. The Holy Shroud: Why we believe. Nawala: MG Printers for Sylvestrine-Benedictine Monks, St. Sylvester's Monastery-Monte Fano, 2014.

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Scott, Charlene. The Holy Shroud: Research continues in Colorado. Colorado Springs, CO: St. Mark's Avenue Press, 1995.

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Book chapters on the topic "Holy Shroud"

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Fanti, Giulio, and Robert Siefker. "The Holy Shroud and the Impossible Image." In The Holy Fire and the Divine Photography, 199–279. New York: Jenny Stanford Publishing, 2023. http://dx.doi.org/10.1201/9781003454441-5.

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Napoli, Paolo. "A Structural Description of the Chapel of the Holy Shroud in Torino." In Nexus Network Journal, 351–68. Basel: Birkhäuser Basel, 2009. http://dx.doi.org/10.1007/978-3-7643-8978-9_4.

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"Holy Shroud." In Encyclopedic Dictionary of Archaeology, 604. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-58292-0_80331.

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"15 Copies of the Holy Shroud for the Court of King Philip II of Spain (1527-1598) 313." In The Shroud at Court, 313–34. BRILL, 2019. http://dx.doi.org/10.1163/9789004390508_016.

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Sadło, Krzysztof. "The Confraternity of the Holy Shroud in Turin." In Digital Syndonological Lexicon. Ksiegarnia Akademicka Publishing, 2022. http://dx.doi.org/10.12797/9788381388368.i.9.1.

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"9 Turin and the Holy Shroud: Supplies of Wheat and Management of Public Order during the Ostensions (XVII-XVIII Centuries) 167." In The Shroud at Court, 167–84. BRILL, 2019. http://dx.doi.org/10.1163/9789004390508_010.

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"8 The Holy Shroud between the Court of Savoy and the City of Turin: The Ostensions from the Seventeenth to Nineteenth Century (1630-1831) 124." In The Shroud at Court, 124–66. BRILL, 2019. http://dx.doi.org/10.1163/9789004390508_009.

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"16 Museum versus Chapel of the Holy Shroud. The Octagonal Hall of the Palace of Victor Amadeus I, Duke of Savoy and King of Cyprus 335." In The Shroud at Court, 335–53. BRILL, 2019. http://dx.doi.org/10.1163/9789004390508_017.

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"11 “Accesi di devoto affetto verso questa meravigliosa reliquia”: The Roman Archconfraternity of the Most Holy Shroud’s Devotional Choices and Strategies of Cult Promotion (17th-18th Centuries) 214." In The Shroud at Court, 214–37. BRILL, 2019. http://dx.doi.org/10.1163/9789004390508_012.

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Elwood, Christopher. "Heavenly Things In Heaven:The First Wave of French Protestant Propaganda,1533-1535." In The Body Broken, 27–55. Oxford University PressNew York, NY, 1999. http://dx.doi.org/10.1093/oso/9780195121339.003.0003.

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Abstract On the morning of january 21, 1535, “the most beautiful and solemn procession ever held in France” set off from the church of St. Germain l’Auxerrois in Paris. Moving through streets lined with tapestries and lighted torches, merchants, artisans, members of the mendicant orders, and religious from all the parishes of the city carried torches, crosses, banners, and the most prized shrines and relics of the city’s impressive collection. The array of holy objects included the reliquary caskets of all the saints associated with the city, the rod of Aaron, the tablets of the Decalogue, a vial containing the milk of the Virgin Mary, the holy crown of thorns, two pieces of the true cross, the head of the spear that pierced Christ’s side, Christ’s burial shroud, and swaddling cloths, and a drop of his blood. Behind this display of sacred objects came representatives of the University of Paris and the cardinals of Tournon, Lisieux, Chatillon and Givry. At the center of the procession, removed from the other participants by a short distance, was the corpus Domini, “the true and precious body of our Lord and Redeemer Jesus Christ.” Cardinal Jean du Bellay, the bishop of Paris, carried a monstrance in the form of a cross, which held the host. Stretched over the sacrament was a crimson canopy embossed with gold fleurs-de-lis, the symbol of the royal house of France. The canopy’s staves were carried by the king’s three sons and Charles de Bourbon, duke of Vendome. Surrounding them were some two hundred guards carrying lighted torches. Immediately behind this contingent walked “the most Christian king” himself, Francis I, escorted by the cardinal of Lorraine. In keeping with the solemnity of the occasion, the king appeared before his subjects bareheaded, wearing a black robe and carrying a lighted torch.
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Conference papers on the topic "Holy Shroud"

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Schrapp, Henner, Arne Dodegge, Volker Gümmer, Neil W. Harvey, Jörn Städing, and Jens Friedrichs. "Reducing Compressor Shroud Leakage Flows by Raising the Stator Hub Line: Low Speed Tests." In ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/gt2019-91611.

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Abstract The paper describes experimental investigations of an alternative shrouded stator concept in a 2.5 stage low speed compressor. The idea of this new concept is to raise the stator hub line by a small amount, thus decelerating the flow upstream of the shroud cavity due to the into wind step and raising the static pressure. Downstream of the cavity the out of wind step changes the streamline curvature thus lowering the static pressure locally. As a result, the static pressure difference across the shroud is lower and the shroud flow is reduced. Tests were done at three seal gap heights under stator 1, both with a “neutral” (in–line) hub and a six percent “bump shroud”, i.e. the hub is raised by six percent annulus height. Performance measurements show the impact of the “bump shroud” geometry on the overall behavior of the compressor, i.e. efficiency and pressure ratio and the variation of these quantities with varying seal gap height. While the efficiency and pressure ratio of the compressor inevitably reduce with increasing seal gap height, the sensitivity of both is reduced by using “bump shrouds”. At small seal gap heights the “bump shroud” design behaves similarly to the neutral one, while at the design seal gap height it is superior. Thus, both the efficiency and the pressure ratio are less sensitive against seal gap height variations if the compressor is equipped with a raised hub line — leading to a more robust product. A similar behavior is seen at near stall conditions. The analysis of five hole probe measurements reveals the reason for the improved efficiency. The stator 1 losses were significantly reduced by the introduction of the “bump shroud”. This is mostly due to the reduced amount of shroud flow and the subsequent reduction of hub cross–flow in the stator. A comparison of losses with and without the raised hub line show not only a reduction of the losses near the hub, but also adjacent to the suction side of the stator due to reduced migration of hub boundary layer fluid onto the vane.
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Bohn, Dieter E., Ingo Balkowski, Hongwei Ma, Christian Tu¨mmers, and Michael Sell. "Influence of Open and Closed Shroud Cavities on the Flowfield in a 2-Stage Turbine With Shrouded Blades." In ASME Turbo Expo 2003, collocated with the 2003 International Joint Power Generation Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/gt2003-38436.

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An important goal of the development of turbine bladings is to increase the efficiency for an optimized use of energy resources. This necessitates the most possible insight into the complex flow phenomena in multi-stage turbine bladings. This paper presents a combined numerical and experimental investigation of the flow field in a 2-stage axial turbine with shrouded blades, where the axial gap between the shroud and the endwall is varied between 1mm (closed cavities) and 5 mm (opened cavities). In the experimental setup at the Institute of Steam and Gas Turbines, Aachen University, the turbine is operated at a low pressure ratio of 1.4 with an inlet pressure of 3.2 bar. The rotating speed is adjusted by a water brake, which is integrated into a swing frame running in hydrostatic bearings. The rotor power dissipates in the water brake, which enables a very accurate angular momentum determination. The mass flow is measured through a calibrated nozzle installed upstream of the turbine inlet at an accuracy of better than 1%, from which stage efficiencies can be derived. For both geometric configurations (open and closed shroud cavities), the flow field at both inlet and outlet is measured using 5-hole probes as well as temperature probes at three operating conditions. The test rig is especially designed to investigate the influence of the cavity size. Therefore, the radial gaps between shroud and casing is held near zero in order to prevent an axial flow through the cavities. The experimental results are used as boundary conditions for corresponding numerical multi-stage calculations of the 3D flow through the 2-stage turbine, using the highly accurate steady Navier-Stokes inhouse computer code, CHT-Flow. The flow field measurements and the numerical simulations give deeper insight into some of the cavity-related flow field phenomena. The measurement results as well as the simulations indicate that the stator leading edge has little influence on the inlet flow field. The flow through the shroud cavities has a significant influence on the field and therefore on the machine’s performance.
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Tamunobere, Onieluan, Christopher Drewes, and Sumanta Acharya. "Heat Transfer to an Actively Cooled Shroud With Blade Rotation." In ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gt2014-27103.

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In this paper, an experimental study of the shroud heat transfer behavior and the effectiveness of shroud cooling under the conditions of rotation is undertaken in a single stage turbine at low rotation speeds. The shroud consists of a periodic distribution of cooling holes that are 1 mm in diameter (D). The holes are angled at 45 degrees in a repeating pattern consisting of 5 unique hole pitches around the shroud circumference. Measurements of the normalized Nusselt number and film cooling effectiveness are done using liquid crystal thermography. These measurements are reported for the no coolant case, nominal blowing ratios of 1.0, 1.5, 2.0, 2.5 and 3.0, and rotation speeds of 300, 400, 500, 600 and 700 RPM. The results with no coolant injection show that the high Nu/Nu0 region migrates upstream toward the shroud leading edge with increasing rotation. The cooling results show that increasing the blowing ratio increases the area-averaged film cooling effectiveness in the shroud hole region for all rotation speeds studied. Furthermore, increasing the blade rotation speed increases the area-averaged Nusselt numbers and decreases the area-averaged film cooling effectiveness in the shroud hole region for all blowing ratios studied. As in the no-coolant case, with increasing rotation speeds, the high Nu/Nu0 region migrates upstream toward the shroud leading edge and disrupts the cooling effectiveness in this region. Finally, the results show that decreasing the shroud coolant hole spacing changes the lateral heat transfer profile from a periodic sinusoidal distribution for a shroud hole spacing of P/D = 10.4 to a more even distribution for a smaller P/D = 4.8.
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Tamunobere, Onieluan, and Sumanta Acharya. "Turbine Blade Tip Cooling With Blade Rotation: Part II — Shroud Coolant Injection." In ASME Turbo Expo 2015: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/gt2015-42564.

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In this paper, blade-tip cooling is investigated with coolant injection from the shroud alone and a combination of shroud coolant injection and tip cooling. The blade rotates at a nominal speed of 1200 RPM, and consists of a cut back squealer tip with a tip clearance of 1.7% of the blade span. The blade consists of tip holes and pressure side shaped holes, while the shroud has an array of angled holes and a circumferential slot upstream of the rotor section. Different combinations of the three cooling configurations are utilized to study the effectiveness of shroud cooling as a complementary method of cooling the blade tip. The measurements are done using liquid crystal thermography. Blowing ratios of 0.5, 1.0, 2.0, 3.0 and 4.0 are studied for shroud slot cooling and blowing ratios of 1.0, 2.0, 3.0, 4.0 and 5.0 are studied for shroud hole cooling. For cases with coolant injection from the tip, the blowing ratios used are 1.0, 2.0, 3.0 and 4.0. The results show an increase in film cooling effectiveness with increasing blowing ratio for shroud hole cooling. The increased effectiveness from shroud hole cooling is concentrated mainly in the tip-region below the shroud holes and towards the blade suction side and the suction side squealer rim. Slot cooling injection results in increased effectiveness on the blade tip near the blade leading edge up to a maximum blowing ratio, after which the cooling effectiveness decreases with increasing blowing ratio. The combination of the different cooling methods results in better overall cooling coverage of the blade tip with the shroud hole and blade tip cooling combination being the most effective. The level of coolant protection is strongly dependent on the blowing ratio and combination of blowing ratios.
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Chana, K. S., and B. Haller. "Novel Turbine Rotor Shroud Film-Cooling Design and Validation: Part 1." In ASME Turbo Expo 2009: Power for Land, Sea, and Air. ASMEDC, 2009. http://dx.doi.org/10.1115/gt2009-60242.

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This paper is part one of a two part paper which considers a shroud film-cooling system designed using a two-dimensional approach. Heat transfer to rotor-casings has reached levels that are causing in-service difficulties to be experienced. Future designs are likely to need to employ film-cooling of some form. There is currently very little information available for film-cooling on shroudless turbine rotor-casing liners. Heat transfer literature on uncooled configurations is not extensive and in particular, spatially-detailed, time-accurate data are rare. This paper describes the aero-thermodynamic design and validation of a rotor casing film-cooling system for a transonic, high-pressure shroudless turbine stage. The design was carried out using a boundary layer code with the film-cooling hole geometry representative of an engine configuration and, has been subjected to mechanical constraints similar to those for an engine component. The design consists of two double rows of cooling holes and two ‘cooling-hole’ shape configurations, cylindrical and fan shaped. The design was tested in the QinetiQ short duration turbine test facility (TTF). Measurements taken include casing heat transfer using thin film gauges and stage exit total pressure, Mach number and flow angle using a three-hole pressure probe. Results showed that while the cooling produced a reduction in the heat transfer rate close to the injection point, the film was stripped off the casing and entrained in nozzle guide vane secondary and rotor overtip flow, where it was transported spanwise towards the hub in the rotor passage. Using the results obtained from this deign a second cooling design was carried out, using a three-dimensional approach this gave significantly better cooling performance. The thee-dimensional design and validation is reported in GT2009-60246 as part 2 of this paper.
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6

Yan, Xin, Xiuxiu Chen, and Kun He. "Influence of Shroud Seal Dimensions on Aerodynamic Performance of Steam Turbine Stages: Part II — Hole-Pattern Seal." In ASME Turbo Expo 2016: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/gt2016-56921.

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The hole-pattern seal is usually used as a replacement of honeycomb seal due to their similarities in geometry and performance (leakage and rotordynamic). Compared with the honeycomb seal, the hole-pattern seal is easier to be manufactured and installed thus it is welcomed by the manufactures. However, most current literatures about the hole-pattern seal mainly addressed the rotordynamic characteristic of the shaft seal. Almost no research attempts to give an insight into the aerodynamic performance of the hole-pattern seal applied in turbine stages. Therefore, the main objective of the present paper is to investigate how the hole-pattern seal geometries, i.e. sealing clearance, hole-diameter and hole-depth, affect the aerodynamic performance of the steam turbine stages. With the commercial CFD (Computational Fluid Dynamics) software ANSYS CFX11.0, the leakage rates and aerodynamic efficiencies for the two stages with hole-pattern shroud seals were obtained and compared with those configured with honeycomb shroud seals at a range of seal dimensions. The results show that the leakage rate from the hole-pattern shroud seal is a bit higher than that from the honeycomb shroud seal at the same geometrical parameters (i.e. sealing clearance, hole/cell-diameter and hole/cell-depth). However, for these two configurations, the aerodynamic efficiencies are very close at the small sealing clearance cases. Big differences are shown at the large sealing clearance cases due to the difference in hole-area ratio. For the turbine stages with various hole-diameters and hole-depths, the aerodynamic performance of the turbine stages with honeycomb/hole-pattern seals are mainly affected by the flow patterns at the seal outlet if the sealing clearance is fixed. The sealing clearance has little effect on the flow pattern in the cells/holes, but it has a significant effect on the flow fields in the seal outlet chamber, thus affects the secondary flow development in the downstream flow paths.
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Gupta, Manoj K., and Dara W. Childs. "Rotordynamic Stability Predictions for Centrifugal Compressors Using a Bulk-Flow Model to Predict Impeller Shroud Force and Moment Coefficients." In ASME Turbo Expo 2006: Power for Land, Sea, and Air. ASMEDC, 2006. http://dx.doi.org/10.1115/gt2006-90374.

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An analysis is developed for a compressible bulk-flow model of the leakage path between a centrifugal-compressor impeller’s shroud and its housing along the impeller’s front and back sides. This development is an extension of analyses performed first by Childs [15] for pump impellers. The bulk-flow model is used to predict reaction force and moment coefficients for the impeller shroud. A labyrinth seal code developed by Childs and Scharrer [21] is used to calculate the rotordynamic coefficients developed by the labyrinth seals in the compressor stage and also provides a boundary condition for the shroud calculations. Comparisons between the measured shroud moment coefficients by Yoshida et al. [18] and model predictions show reasonable agreements for the clearance flow and reaction moments. For the conditions considered, low Mach number flow existed in the shroud clearance areas and compressible-flow and incompressible-flow models produced similar predictions. Childs’ model predictions for the direct damping and cross-coupled stiffness coefficients of a pump impeller produced reasonable agreement; hence the present model was validated to the extent possible. A rotor model consisting of an overhung impeller stage supported by a nominally cantilevered rotor was analyzed for stability using the present bulk-flow model and an API standard Wachel-formula model [10]. The bulk-flow model predicted significantly higher onset speeds of instability. Given that some compressors have been predicted to be comfortably stable using API standard Wachel-formula but have been unstable on the test stand, these results suggest that unidentified destabilizing forces and or moments are present in compressors. Seal rub conditions that arise from surge events and increase the seal clearances are simulated, showing that enlarged clearances increase the preswirl at the seals, thus increasing these seal’s destabilizing forces and reducing stability margins. These results are consistent with field experience. Predictions concerning the back shroud indicate that shunt-hole injection mainly acts to enhance stability by changing the flow field of the division wall or balance piston seals, not by influencing the back-shroud’s forces or moments. Effective swirl brakes at these seals also serves this purpose.
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King, Phil T., Gordon E. Andrews, Myeong N. Kim, Mohamed Pourkashanian, and Andy C. McIntosh. "CFD Prediction and Design of Low NOx Radial Swirler Systems." In ASME Turbo Expo 2009: Power for Land, Sea, and Air. ASMEDC, 2009. http://dx.doi.org/10.1115/gt2009-60107.

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A radial swirler with vane passage fuel injection using a radial fuel spoke with one fuel hole per passage was investigated using CFD at 0.5 equivalence ratio and 600K inlet temperature at 1 bar. Experimental measurements of the internal flame composition from water cooled gas sample probes were the experimental results used for comparison. Three combustion models were compared: flamelet with two difference kinetic schemes; PDF transport with two step chemistry and finite rate eddy dissipation model. Both models consistently underpredicted the turbulent flame thickness to 90% heat release by a factor of about 2. The PDF model with postprocessing NOx predictions over estimated the NOx emissions considerably and the best model was the flamelet model with full chemistry. The under prediction of the turbulent reaction zone thickness was concluded to be due to inadequate modelling of strained flame quenching for very lean flames with large laminar flame thickness and very low burning velocities. This flamelet model was applied to predict the influence of the radial swirler outlet geometry on the flame development, fuel and air mixing and NOx emissions. A dump expansion from the radial swirler outlet was compared with the addition of a shroud at the outlet and with the addition of a 60mm long outlet throat. The shroud was shown to increase the peak turbulence and confine it very close to the shroud lip. This improved the fuel and air mixing and lowered the predicted NOx from 2.7ppm to 1.2ppm with the shrouded swirler and 0.3ppm with the 60mm outlet throat and mixing length.
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Tamunobere, Onieluan, and Sumanta Acharya. "Turbine Shroud Heat Transfer and Cooling With Blade Rotation: Part I — Forward, Backward and Lateral Injection." In ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/gt2017-65102.

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This is the first in a two-part series of an experimental film cooling study on a gas turbine shroud with a blade rotation speed of 1200 RPM. In this part of the study, the effect of forward, backward and lateral injection on the shroud heat transfer and cooling behavior is investigated. The shroud with a staggered hole arrangement and a hole pitch to diameter ratio of 4.0, consists of holes angled at 45° to the surface. Four hole configurations using inline and lateral coolant injection methods are utilized in this study. The first configuration consists of streamwise and forward facing holes inclined at 45 degrees to the surface (ϕ = 0°). The second configuration consists of backward facing holes also inclined at 45 degrees to the surface (ϕ = 180°). The third and fourth configurations consist of lateral injection with a surface angle of 45 degrees in the direction of blade rotation (ϕ = 90°) and opposite the direction of blade rotation (ϕ = 270°), respectively. The heat transfer coefficient is reported for the no-coolant case and measurements of the heat transfer coefficient and film cooling effectiveness are reported for each configuration at nominal blowing ratios of 0.5, 1.0, 1.5 and 2.0 using liquid crystal thermography. The results show that in-line injection performs better than lateral injection at low blowing ratios and the reverse is true at higher blowing ratios. Backward injection does show higher laterally averaged effectiveness with increased spreading in the vicinity of the coolant holes than forward injection. With a compact coolant hole arrangement, this results in higher area averaged effectiveness for backward injection than forward injection. With increased lateral spreading of the coolant in the hole region, lateral injection results in higher peak effectiveness values than inline injection. Nevertheless, lateral injection does not have the axial penetration of inline injection and as such leaves regions of the shroud downstream of the coolant holes vulnerable.
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10

Arisawa, Hidenori, Yuji Shinoda, Yoshiyuki Noguchi, Tatsuhiko Goi, Takahiko Banno, and Hirofumi Akahori. "Developments of a Flow Visualization Borescope and a Two-Phase Flow Probe for Aeroengine Transmission Gears." In ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/gt2018-75083.

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In order to reduce oil dynamic power loss in aeroengine gearboxes, visualizations and measurements of the oil-flow are effective. In the research presented in this paper, we developed a flow visualization borescope which can qualitatively visualize oil flow and a two-phase flow probe which can quantitatively measure oil/air ratio and the flow velocity. The flow visualization borescope consists of a 16mm diameter pipe in which an air purge passage for removing oil mist and a borescope are integrated with an illumination laser light and optical lenses, enabling clear high-speed photography. The two-phase probe consists of a 5mm diameter pipe with a 1mm diameter measurement hole and has a pressure adjustment pipe inside the pipe. For a demonstration, a shrouded spur gear with 100 m/s peripheral speed and 20 liters/min oil supply was used. Flow visualization at 30000 frame/sec imaging shows that oil outflow from the shroud opening spreads turbulently over the whole width of the opening. Oil/air ratio and flow velocity measurement by the two-phase flow probe show that there was thin oil-rich layer on the shroud wall and the flow speed was slow compared with the gear peripheral speed. The measurement equipment we developed was easily installed to the gearbox and therefore it is expected to apply to real aeroengine gearboxes.
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Reports on the topic "Holy Shroud"

1

Evans, Julie, Kendra Sikes, and Jamie Ratchford. Vegetation classification at Lake Mead National Recreation Area, Mojave National Preserve, Castle Mountains National Monument, and Death Valley National Park: Final report (Revised with Cost Estimate). National Park Service, October 2020. http://dx.doi.org/10.36967/nrr-2279201.

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Vegetation inventory and mapping is a process to document the composition, distribution and abundance of vegetation types across the landscape. The National Park Service’s (NPS) Inventory and Monitoring (I&M) program has determined vegetation inventory and mapping to be an important resource for parks; it is one of 12 baseline inventories of natural resources to be completed for all 270 national parks within the NPS I&M program. The Mojave Desert Network Inventory & Monitoring (MOJN I&M) began its process of vegetation inventory in 2009 for four park units as follows: Lake Mead National Recreation Area (LAKE), Mojave National Preserve (MOJA), Castle Mountains National Monument (CAMO), and Death Valley National Park (DEVA). Mapping is a multi-step and multi-year process involving skills and interactions of several parties, including NPS, with a field ecology team, a classification team, and a mapping team. This process allows for compiling existing vegetation data, collecting new data to fill in gaps, and analyzing the data to develop a classification that then informs the mapping. The final products of this process include a vegetation classification, ecological descriptions and field keys of the vegetation types, and geospatial vegetation maps based on the classification. In this report, we present the narrative and results of the sampling and classification effort. In three other associated reports (Evens et al. 2020a, 2020b, 2020c) are the ecological descriptions and field keys. The resulting products of the vegetation mapping efforts are, or will be, presented in separate reports: mapping at LAKE was completed in 2016, mapping at MOJA and CAMO will be completed in 2020, and mapping at DEVA will occur in 2021. The California Native Plant Society (CNPS) and NatureServe, the classification team, have completed the vegetation classification for these four park units, with field keys and descriptions of the vegetation types developed at the alliance level per the U.S. National Vegetation Classification (USNVC). We have compiled approximately 9,000 existing and new vegetation data records into digital databases in Microsoft Access. The resulting classification and descriptions include approximately 105 alliances and landform types, and over 240 associations. CNPS also has assisted the mapping teams during map reconnaissance visits, follow-up on interpreting vegetation patterns, and general support for the geospatial vegetation maps being produced. A variety of alliances and associations occur in the four park units. Per park, the classification represents approximately 50 alliances at LAKE, 65 at MOJA and CAMO, and 85 at DEVA. Several riparian alliances or associations that are somewhat rare (ranked globally as G3) include shrublands of Pluchea sericea, meadow associations with Distichlis spicata and Juncus cooperi, and woodland associations of Salix laevigata and Prosopis pubescens along playas, streams, and springs. Other rare to somewhat rare types (G2 to G3) include shrubland stands with Eriogonum heermannii, Buddleja utahensis, Mortonia utahensis, and Salvia funerea on rocky calcareous slopes that occur sporadically in LAKE to MOJA and DEVA. Types that are globally rare (G1) include the associations of Swallenia alexandrae on sand dunes and Hecastocleis shockleyi on rocky calcareous slopes in DEVA. Two USNVC vegetation groups hold the highest number of alliances: 1) Warm Semi-Desert Shrub & Herb Dry Wash & Colluvial Slope Group (G541) has nine alliances, and 2) Mojave Mid-Elevation Mixed Desert Scrub Group (G296) has thirteen alliances. These two groups contribute significantly to the diversity of vegetation along alluvial washes and mid-elevation transition zones.
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NIOSH Hazard Controls HC27 - New shroud design controls silica dust from surface mine and construction blast hole drills. U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, November 1998. http://dx.doi.org/10.26616/nioshpub98150.

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