Relevant bibliographies by topics / Damping of pressure pulsations

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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 'Damping of pressure pulsations'

Author: Grafiati
Published: 28 June 2021
Last updated: 29 July 2025

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Journal articles on the topic "Damping of pressure pulsations"

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Ma, Quyang, Zhenhuan Wu, Guoan Yang, Yue Ming, and Zheng Xu. "Pulsation suppression in a reciprocating compressor piping system using a two-tank element." Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering 232, no. 4 (2017): 427–37. http://dx.doi.org/10.1177/0954408917713436.

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Gas pulsations excited by reciprocating compressors could introduce severe vibrations and noise in piping systems. When pulsating gas flows through the reducers, the changes in flow characteristics, such as velocity and damping coefficient, will affect the pressure pulsations. To circumvent these constraints, a two-tank element is introduced to control the gas pulsation that is still strong in the piping system with a surge tank. Installing another surge tank to form a two-tank element is more flexible and costs lower than replacing the original surge tank with a larger one. In this work, a th
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Himr, Daniel, Vladimír Habán, and Simona Fialová. "Influence of Second Viscosity on Pressure Pulsation." Applied Sciences 9, no. 24 (2019): 5444. http://dx.doi.org/10.3390/app9245444.

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A mathematical model of pulsating flow is proposed in the paper. The model includes more accurate description of energy dissipation, so it allows, for example, better stability analysis of water power plant control and more effective operation. Flow in a pipeline system is usually treated as a one-dimensional flow. This is also applied for more difficult cases of the Newtonian and non-Newtonian liquids simulations in the rigid or flexible pipes. Computational simulations of pressure pulsations in pipelines often predict lower damping than what the experimental results show. This discrepancy ca
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Rabsztyn, Dominik, and Klaudiusz Klarecki. "Model and experimental analysis of influence of selected parameters of hydraulic line on displacement pump pressure pulsations damping." Journal of Konbin 54, no. 1 (2024): 1–20. http://dx.doi.org/10.5604/01.3001.0054.4459.

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Among practitioners, the prevailing view is that the use of a discharge line made of an elastic hose allows users not only to isolate the pump unit from the rest of the system for transferred vibrations, but also to obtain the passive damping of pressure pulsation generated by the pump flow rate pulsation. The objective of the model and experimental research described in this article was to confirm or disprove the common opinion that a discharge line with an elastic hose is a sufficient element to damp the pressure pulsation caused by the displacement pump. The article presents experimental st
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Li, Ruichuan, Dongrun Li, Zhengyu Li, Tong Wu, and Jikang Xu. "Research on the Effect of Damping Grooves on the Pressure and Cavitation Characteristics of Axial Piston Pumps." Processes 13, no. 5 (2025): 1274. https://doi.org/10.3390/pr13051274.

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The damping groove structure of the port plate plays a crucial role in the pulsation suppression, vibration reduction, and noise optimization of the piston pump. Different damping groove structures have a significant impact on the flow distribution process during the normal operation of the port plate, affecting the pump outlet flow and pressure pulsations, which in turn influence the noise level of the piston pump. Therefore, the damping groove in the piston pump is one of the key structures influencing the pump’s pressure and cavitation behavior. To address the pressure shocks and oscillatio
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Ma, Quyang, Zhenhuan Wu, Mengjun Li, and Guoan Yang. "Pulsation attenuation in a reciprocating compressor piping system using a volume-perforated pipe-volume suppressor." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 232, no. 17 (2017): 3074–84. http://dx.doi.org/10.1177/0954406217729422.

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A volume-perforated pipe-volume suppressor is introduced to study its performance in attenuating pressure pulsations. On the basis of plane wave theory, the work developed a mathematical model to predict the distribution of pressure pulsations in a reciprocating compressor piping system with the proposed suppressor. The theoretical predictions were verified through experiments and three-dimensional fluid dynamics transient simulations, and good agreements were attained. Results proved that the pressure pulsations were attenuated significantly when the suppressor was used. In the frequency doma
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Himr, Daniel, and Vladimir Haban. "Damping of Self-Excited Pressure Pulsations in Petrodiesel Pipeline." Applied Mechanics and Materials 630 (September 2014): 375–82. http://dx.doi.org/10.4028/www.scientific.net/amm.630.375.

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A pumping station in a fuel storage suffered from pressure pulsations in a petrodiesel pipeline. Check valves protecting the station against back flow made a big noise when disc hit a seat. Due to employees complaints we were asked to solve the problem, which could lead to serious mechanical problems. Pressure measurement in the pipeline showed great pulsations, which were caused by self-excited oscillation of control valves at the downstream end of pipeline. The operating measurement did not catch it because of too low sampling frequency. One dimensional numerical model of the whole hydraulic
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Himr, Daniel, Vladimír Habán, and David Štefan. "Inner Damping of Water in Conduit of Hydraulic Power Plant." Sustainability 13, no. 13 (2021): 7125. http://dx.doi.org/10.3390/su13137125.

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The operation of any hydraulic power plant is accompanied by pressure pulsations that are caused by vortex rope under the runner, rotor–stator interaction and various transitions during changes in operating conditions or start-ups and shut-downs. Water in the conduit undergoes volumetric changes due to these pulsations. Compression and expansion of the water are among the mechanisms by which energy is dissipated in the system, and this corresponds to the second viscosity of water. The better our knowledge of energy dissipation, the greater the possibility of a safer and more economic operation
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Britsyn, S. V., M. V. Ryabinin, and S. E. Semenov. "OSCILLATION DAMPER CALCULATION BASED ON THE ELECTRO HYDRAULIC ANALOGY." Spravochnik. Inzhenernyi zhurnal, no. 275 (2020): 17–24. http://dx.doi.org/10.14489/hb.2020.02.pp.017-024.

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The method of the synthesis and the pressure fluctuations damping calculation based on the electro-hydraulic analogy is proposed. The mathematical model describing the processes of unsteady fluid flow through the device is developed. Using the composed transfer function and its approximation, the oscillation damper parameters identification to reduce the outlet pressure pulsations in the triplex plunger pump is carried out.
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Lepeshkin, A. A., L. A. Berdnikov, M. G. Korzhachkin, and V. A. Panov. "Damping of pressure pulsations in the fuel system of the motor." IOP Conference Series: Materials Science and Engineering 1086, no. 1 (2021): 012011. http://dx.doi.org/10.1088/1757-899x/1086/1/012011.

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Lato, T., and A. Mohany. "Passive damping of pressure pulsations in pipelines using Herschel-Quincke tubes." Journal of Sound and Vibration 448 (May 2019): 160–77. http://dx.doi.org/10.1016/j.jsv.2019.02.020.

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Dissertations / Theses on the topic "Damping of pressure pulsations"

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Čepl, Ondřej. "Tlumení tlakových pulzací a snižování hluku v potrubních systémech." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-444301.

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The diploma thesis deals with pressure pulsations in pipeline system with dynamic muffler. There is presented original geometry of side-branch resonator. Pressure pulsations are solved by a created mathematical model, numerical simulations and verified by an experimental approach. The influence of dynamic and bulk viscosity is involved in derived governing equations. A system of nonlinear equations is solved by genetic algorithm and frequency dependent relationship of bulk viscosity of air is determined afterwards. The correct function of used pressure sensors is tested. The processing of expe
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Kobro, Einar. "Measurement of Pressure Pulsations in Francis Turbines." Doctoral thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for energi- og prosessteknikk, 2010. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-11715.

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The work presented in this thesis involves preparation and execution of measurements on Francis runners. The measurements were performed by means of onboard measuring equipment both in model runners and full-scale prototype runners. Also, analysis of the measured data, and the discussion of the results, is presented. The measurements resulted in large data sets. These data sets were used by the author to investigate the dynamic pressure and strain in the runners. The results of the analysis can be used as input in future turbine design. Andritz Hydro AG has used the data for verification of th
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Branner, James Lester. "Noise due to pressure pulsations in a pressure-balanced sliding vane pump." Thesis, Virginia Polytechnic Institute and State University, 1987. http://hdl.handle.net/10919/101167.

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An experimental investigation of noise in a pressure-balanced sliding vane pump was conducted. The test pump for this research was used in an automobile's hydraulic power steering system. As currently designed, a small portion of the manufactured pumps generate excessive noise during operation. An experimental test stand facility was used to represent a power steering system for analysis of the excessive noise problem with the objective of determining ways to reduce the noise. Through signature analysis techniques, the sliding vane pump noise was related to the pump's pressure pulsations. The
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DHANORE, NISHANT. "Impact of Pressure Pulsations on Diesel Air Path Control and Compensation Measures." Thesis, KTH, Maskinkonstruktion (Avd.), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-251023.

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Stricter pollution norms have led to increased efforts to achieve lower emissions. Exhaust Gas Re-circulation (EGR) is a well known measure to reduce NOx internally in the engine. In order to achieve better performance of an engine in terms of emissions it is very essential to control the flow of exhaust gases through EGR valve. Generally, an Engine Control Unit (ECU) uses mean value models or map-based approaches to calculate the mass flow through EGR valve. The main driving factor of the mass flow through an EGR valve i.e. the exhaust gas pressure is continuously fluctuating throughout an en
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Panko, Martin. "Tlumení tlakových pulsací v pružných potrubích." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2008. http://www.nusl.cz/ntk/nusl-228178.

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This diploma thesis deals with numerical simulation of pressure pulsations in elastic pipes. Continuity relation of fluid in elastic pipes, when calculating some damping in pipe material, is derived into practice. Rheological model of such a pipe corresponds to Voigt (Kelvin) model. For analysing dynamic effects in time periods are used numerical methods that deal with flow of compressible fluid: FTCS, Lax-Friedrichs and Lax-Wendroff method. The numerical results are confronted with the experiment. During the experiment simulation the method considers speed of sound in liquid like a function o
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Spence, R. "CFD Analyses of Centrifugal Pumps with Emphasis on Factors Affecting Internal Pressure Pulsations." Thesis, Cranfield University, 2006. http://dspace.lib.cranfield.ac.uk/handle/1826/7598.

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The operation of centrifugal pumps can generate instabilities and pressure pulsations that may be detrimental to the integrity and performance of the pump. Until recently these pressure pulsations could only be determined experimentally which resulted in a limited understanding of pressure pulsations around the pump. Industrial pump guarantees are limited to pulsation levels measured at the discharge. However, numerical analysis techniques have advanced to such a stage that they can now be used to explore these effects. The multi-block, structured grid CFD code TASCflow was used to investigate
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Okeng'o, Geoffrey Onchong’a. "A theoretical study of stellart pulsations in young brown dwarfs." Thesis, University of the Western Cape, 2011. http://hdl.handle.net/11394/2567.

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Magister Scientiae - Msc<br>This thesis reports the results of a twofold study on the recently proposed phenomenon of ‘stellar pulsations’ in young brown dwarfs by the seminal study of Palla and Baraffe (2005) (PB05, thereafter). The PB05 study presents results of a non-adiabatic linear stability analysis showing that young brown dwarfs should become pulsationally unstable during the deuterium burning phase of their evolution.<br>South Africa
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Schoemacker, Florian, Felix Fischer, and Katharina Schmitz. "Damping strategies for energy efficient pressure controllers of variable displacement pumps." Technische Universität Dresden, 2020. https://tud.qucosa.de/id/qucosa%3A71108.

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In hydraulic-mechanically controlled variable displacement pumps, the actual pump controller produces additional power losses. Due to the low damping coefficients of all pump controller’s components, hydraulic-mechanically pressure controlled pumps use to oscillate while adjusting the pressure level in the hydraulic system. In several state-of-the-art variable pump controllers, a damping orifice connects the control actuator’s displacement chamber with the reservoir. This bypass dampens the movement of the control actuator but also leads to bypass losses during steady-state operation of the pu
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Ozdemir, Sahika. "Design Considerations And Performance Evaluation Of A Surge Tank For Diaphragm Pump Operation." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612662/index.pdf.

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This thesis is performed to evaluate the design consideration and performance characteristics of a surge tank for a diaphragm pump operation and to evaluate the proper volume and inlet area of surge tank in order to reduce the pulsations of the discharge pressure. An experimental set up is constructed for a three diaphragm positive displacement pump and the experiments are conducted afterwards. The surge tanks having different volumes and the surge tank inlet area configurations are tested in order to achieve the minimum peak to peak pulsations. Experiments showed that among the different size
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Joy, Jesline. "Mitigation of Pressure Pulsations in Francis Turbine Draft Tube with a GuideVane System : A Numerical Investigation." Licentiate thesis, Luleå tekniska universitet, Strömningslära och experimentell mekanik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-83990.

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The use of renewable energy such as water and wind to produce electricity has been proven extremely effective in Sweden. The ability of these renewable resources to produce clean output energy counters the adversities caused by non-renewable resources. The use of hydraulic turbines is a good example of favoured technique for energy and power production using renewable resources. The hydro-turbines are designed to operate at best efficiency point (BEP). Varying energy demands in recent years implies on the need of flexible operation of hydraulic turbines. The issue of pressure pulsations in the
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Books on the topic "Damping of pressure pulsations"

1

Bagnall, Stephen M. Impact damping of high pressure turbine blades. University of Birmingham, 1985.

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University of Wyoming. Dept. of Civil and Architectural Engineering. Traffic signal pole research (damping). Dept. of Civil and Architectural Engineering, University of Wyoming, 2001.

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F, Hara, American Society of Mechanical Engineers. Prssure Vessels and Piping Division., and Pressure Vessels and Piping Conference (1991 : San Diego, Calif.), eds. Active and passive damping, 1991: Presented at the 1991 Pressure Vessels and Piping Conference, San Diego, California, June 23-27, 1991. American Society of Mechanical Engineers, 1991.

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K, Karim-Panahi, American Society of Mechanical Engineers. Pressure Vessels and Piping Division., American Society of Mechanical Engineers. Materials Division., American Society of Mechanical Engineers. Nondestructive Evaluation Engineering Division., and Pressure Vessels and Piping Conference (1995 : Honolulu, Hawaii), eds. Advances in vibration issues, active and passive vibration mitigation, damping and seismic isolation: Presented at the 1995 Joint ASME/JSME Pressure Vessels and Piping Conference, Honolulu, Hawaii, July 23-27, 1995. American Society of Mechanical Engineers, 1995.

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N, Isyumov, Tschanz T, American Society of Civil Engineers. Aerodynamics Committee., American Society of Civil Engineers. Wind Effects Committee., and ASCE National Convention (1986 : Seattle, Wash.), eds. Building motion in wind: Proceedings of a session sponsored by the Aerodynamics Committee of the Aerospace Division and the Wind Effects Committee of the Structural Division of the American Society of Civil Engineers in conjunction with the ASCE Convention in Seattle, Washington, April 8, 1986. American Society of Civil Engineers, 1986.

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1943-, Chung H., American Society of Mechanical Engineers. Pressure Vessels and Piping Division., and Pressure Vessels and Piping Conference (1990 : Nashville, Tenn.), eds. Seismic, shock, and vibration isolation, 1990: Presented at the 1990 Pressure Vessels and Piping Conference, Nashville, Tennessee, June 17-21, 1990. American Society of Mechanical Engineers, 1990.

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1943-, Chung H., American Society of Mechanical Engineers. Pressure Vessels and Piping Division., and Pressure Vessels and Piping Conference (1991 : San Diego, Calif.), eds. Seismic, shock, and vibration isolation, 1991: Presented at the 1991 Pressure Vessels and Piping Conference, San Diego, California, June 23-27, 1991. American Society of Mechanical Engineers, 1991.

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Pressure Vessels and Piping Conference (1992 New Orleans, La.). DOE facilities programs, systems interaction, and active/inactive damping: Presented at the 1992 Pressure Vessels and Piping Conference, New Orleans, Louisiana, June 21-25, 1992. Edited by Lin Chi-Wen, Chen W. W, and American Society of Mechanical Engineers. Pressure Vessels and Piping Division. American Society of Mechanical Engineers, 1992.

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Pressure, Vessels and Piping Conference (1988 Pittsburgh Pa ). Damping--1988: Presented at the 1988 ASME Pressure Vessels and Piping Conference, Pittsburgh, Pennsylvania, June 19-23, 1988. American Society of Mechanical Engineers, 1988.

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1943-, Chung H., Saleem M. A, American Society of Mechanical Engineers. Pressure Vessels and Piping Division., and Pressure Vessels and Piping Conference (1996 : Montréal, Québec), eds. Seismic, shock, and vibration isolation, 1996: Presented at the 1996 ASME Pressure Vessels and Piping Conference, Montréal, Québec, Canada, July 21-26 1996. American Society of Mechanical Engineers, 1996.

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Book chapters on the topic "Damping of pressure pulsations"

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Tan, Jianping, Kunpeng Han, Yao Liu, Xiaoxuan Huang, and Erte Lin. "Optimization of Damping Groove Parameters of Swashplate Plunger Pump Based on CATIA Secondary Development." In Lecture Notes in Mechanical Engineering. Springer Nature Singapore, 2025. https://doi.org/10.1007/978-981-97-7887-4_81.

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Abstract In order to improve the performance of the plunger pump, aiming at the problems of flow pulsation and pressure overshoot of the plunger pump, a new compound slot flow distribution buffer tank structure is proposed. CATIA modeling software is used to obtain the overflow area curve of the valve plate through Boolean operation. Through the secondary development of the software, the overflow area curve of the valve plate under different parameter values can be obtained efficiently. Then the pressure, flow and other related parameters of the pump can be observed in the AMESim model of the
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Młynarczyk, Przemysław, Damian Brewczyński, Joanna Krajewska-Śpiewak, Paweł Lempa, Jarosław Błądek, and Kamil Chmielarczyk. "Pressure Pulsation and Pipeline Vibration Damping with the Use of 3D Printed Nozzles." In Mechanisms and Machine Science. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-15758-5_113.

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Krajewska-Śpiewak, Joanna, Damian Brewczyński, and Przemysław Młynarczyk. "Prediction of Pressure Pulsation Damping Efficiency with the Use of Shaped Nozzles Based on Their Geometrical Parameters." In Springer Proceedings in Energy. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-42663-6_54.

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Constant, Jules. "Jugular Pressure and Pulsations." In Essentials of Bedside Cardiology. Humana Press, 2003. http://dx.doi.org/10.1007/978-1-59259-338-5_4.

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Weik, Martin H. "damping pressure roller." In Computer Science and Communications Dictionary. Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_4153.

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Kercan, Vladimir, Marin Bajd, Vesko Djelić, Andrej Lipej, and Dragica Jošt. "Model and Prototype Draft Tube Pressure Pulsations." In Hydraulic Machinery and Cavitation. Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-010-9385-9_101.

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Magnoli, M. V., and R. Schilling. "Numerical Simulation of Pressure Pulsations in Francis Turbines." In Advances in Hydroinformatics. Springer Singapore, 2013. http://dx.doi.org/10.1007/978-981-4451-42-0_32.

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van Buren, Simon, and Wolfgang Polifke. "Heat Transfer in Pulsating Flow and Its Impact on Temperature Distribution and Damping Performance of Acoustic Resonators." In Notes on Numerical Fluid Mechanics and Multidisciplinary Design. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-53847-7_6.

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Abstract A numerical framework for the prediction of acoustic damping characteristics is developed and applied to a quarter-wave resonator with non-uniform temperature. The results demonstrate a significant impact of the temperature profile on the damping characteristics and hence the necessity of accurate modeling of heat transfer in oscillating flow. Large Eddy Simulations are applied to demonstrate and quantify enhancement in heat transfer induced by pulsations. The study covers wall-normal heat transfer in pulsating flow as well as longitudinal convective effects in oscillating flow. A dis
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Hou, X. X., S. F. Teng, C. X. Xiong, and Z. Y. Yang. "Effects of Rotating Stall on Flow Patterns and Pressure Pulsation in Clearance Flow Channels of Pump-Turbines." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-9184-2_26.

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AbstractThe clearance flow channel (CFC) of pump-turbine is a thin cavity composed of a runner and head cover or bottom ring, but excessive pressure pulsation in a flat CFC is easy to cause the head cover excitation. At present, there are insufficient studies on the flow patterns, and pressure pulsations in CFC. In this paper, the 3D CFD numerical simulation method was used to reveal the flow patterns, and pressure pulsations in the CFC of a low specific speed pump-turbine under rotational stall condition. The results showed that the stall vortexes rotated in the vaneless region of the main fl
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Hodzic, Nihad, and Kenan Kadic. "Qualitative Analysis of the Correlation Between Heat Transfer Coefficient and Pressure Pulsations." In New Technologies, Development and Application VII. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-66268-3_76.

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Conference papers on the topic "Damping of pressure pulsations"

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Zhang, Xieli, and Damiano Padovani. "Raise Damping in Electro-Hydraulic Systems with Observed Pressure." In 2025 11th International Conference on Mechatronics and Robotics Engineering (ICMRE). IEEE, 2025. https://doi.org/10.1109/icmre64970.2025.10976284.

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Sanna, F., J. Golliard, and S. P. C. Belfroid. "On the Effect of Water Film on Flow-Induced Pulsations in Closed Side Branches in Tandem Configuration." In ASME 2015 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/pvp2015-45521.

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Previous studies demonstrate that the presence of liquid strongly influences the pressure pulsation amplitudes of flow induced pulsations. In particular, in case of annular flow (thin liquid film on the walls) the pulsations can be eliminated. The present study aims at evaluating the contribution of the liquid film to the pulsation reduction. Experiments have been performed in a tandem configuration with two side branches upward oriented. The side branches have the same diameter as the main pipe. A first set of experiments has been conducted with the injection point located far upstream the up
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Bellucci, Valter, Christian Oliver Paschereit, Peter Flohr, and Fulvio Magni. "On the Use of Helmholtz Resonators for Damping Acoustic Pulsations in Industrial Gas Turbines." In ASME Turbo Expo 2001: Power for Land, Sea, and Air. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/2001-gt-0039.

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In modern gas turbines operating with premix combustion flames, the suppression of pressure pulsations is an important task related to the quality of the combustion process and to the structural integrity of engines. High pressure pulsations may occur when the resonance frequencies of the system are excited by heat release fluctuations independent of the acoustic field (“loudspeaker” behavior of the flame). Heat release fluctuations are also generated by acoustic fluctuations in the premixed stream. The feedback mechanism inherent in such processes (“amplifier” behavior of the flame) may lead
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Hayashi, Itsuro, and Shigehiko Kaneko. "Pressure Pulsations in a Drum Excited by a Centrifugal Compressor Connected to a Piping System." In ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2010. http://dx.doi.org/10.1115/fedsm-icnmm2010-30295.

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The characteristics of the pressure pulsations in a drum connected to a piping system excited by a centrifugal compressor or a blower operated at blade-passing frequencies were investigated. In this study, the equivalent resistance of a compressor and that of a piping system were introduced and linked to the three dimensional calculation model, so that the non-linear damping proportional to velocity squared in the system is properly incorporated. The experiment was performed in order to validate the proposed simulation model. As a result, the three dimensional pressure response in the drum as
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Li, Joe Z., Chris Treusch, Benoît Honel, and Stéphane Neyrat. "Simulation of Pressure Pulsations in a Gasoline Injection System and Development of an Effective Damping Technology." In SAE 2005 World Congress & Exhibition. SAE International, 2005. http://dx.doi.org/10.4271/2005-01-1149.

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Golliard, Joachim, Stefan Belfroid, Olav Vijlbrief, and Knud Lunde. "Direct Measurements of Acoustic Damping and Sound Amplification in Corrugated Pipes With Flow." In ASME 2015 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/pvp2015-45494.

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The flow-induced pulsations in corrugated pipes result from a feedback loop between an acoustic resonator and the noise amplification at each shear layer in the axisymmetric cavities forming the corrugations. The quality factor of the resonator is determined by the reflection coefficients at the ends of the corrugated pipe and by the damping in the pipe. In this work, the damping of acoustic waves in a set of smooth and corrugated pipes is measured by a direct method. For these measurements, the tested pipes are placed between two measuring pipes equipped with flush-mounted pressure transducer
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Bothien, Mirko R., Nicolas Noiray, and Bruno Schuermans. "A Novel Damping Device for Broadband Attenuation of Low-Frequency Combustion Pulsations in Gas Turbines." In ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gt2012-68873.

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Damping of thermoacoustically induced pressure pulsations in combustion chambers is a major focus of gas turbine operation. Conventional Helmholtz resonators are an excellent means to attenuate thermoacoustic instabilities in gas turbines. Usually, however, the damping optimum is in a narrow frequency band at one operating condition. The work presented here deals with a modification of the basic Helmholtz resonator design over-coming this drawback. It consists of a damper body housing separated volumes that are connected to each other. Adequate adjustment of the governing parameters results in
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Schuermans, Bruno, Mirko Bothien, Michael Maurer, and Birute Bunkute. "Combined Acoustic Damping-Cooling System for Operational Flexibility of GT26/GT24 Reheat Combustors." In ASME Turbo Expo 2015: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/gt2015-42287.

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In the development process of gas turbine combustion chambers, finding countermeasures for thermoacoustically induced pressure pulsations is a major focus. This paper presents a novel system consisting of a multi-layered and multi-functional high frequency damping and cooling structure that is implemented on the sequential burner front panel of the GT26/GT24 gas turbines. The device features multiple single Helmholtz dampers and an advanced convective near wall cooling system to improve the cooling capability and to reduce the cooling mass flow and thereby reducing NOx emissions. The acoustic
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Sherwood, Joseph, Jonathan Dusting, Efstathios Konstantinidis, and Stavroula Balabani. "Flow-Induced Streamwise Vibration of a Flexibly-Mounted Cantilevered Cylinder in Steady and Pulsating Crossflow." In ASME 2009 Pressure Vessels and Piping Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/pvp2009-77293.

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This paper describes an experimental study of the response of a freely vibrating cylinder with low mass ratio and high damping to steady and pulsating crossflow for Reynolds numbers in the range 120–2900. A rigid circular cylinder was cantilevered by means of a plate spring allowing it to oscillate in the stream-wise direction only. A camera-based technique was employed for tracking the cylinder vibration while the wake fluctuations were measured by a laser-Doppler system. The results show that the forced excitation from pulsating flow can take over control of the wake and/or the cylinder osci
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Anthikat-Albert, Benedict D., Theresia I. Yiallourou, Jose Haba-Rubio, et al. "Continuous Positive Airway Pressure Impacts Cerebral Blood Flow and Cerebrospinal Fluid Motion: A Phase Contrast MRI Study." In ASME 2012 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/sbc2012-80683.

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The physiological impacts of continuous positive airway pressure (CPAP) are not yet fully understood. In this study we developed an MRI protocol to assess the impact of CPAP on cerebral hemodynamics and cerebrospinal fluid (CSF) hydrodynamics in the upper cervical spine. MRI measurements were obtained on 14 healthy male subjects. The preliminary results indicated that the CSF pulsation decreased and venous outflow was altered with CPAP usage in comparison to the baseline values. Cerebral arterial flow was not impacted by CPAP usage. These findings support the hypothesis that the CSF system can
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Reports on the topic "Damping of pressure pulsations"

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George, Darin, and Christopher Grant. PR-015-15601-R01 Pulsation Effects on Ultrasonic Meters Phase II. Pipeline Research Council International, Inc. (PRCI), 2016. http://dx.doi.org/10.55274/r0010905.

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Transmission and storage operations frequently move natural gas using reciprocating compressors that may generate flow pulsations. Most measurement systems cannot accurately measure the flow rate of a pulsating gas stream, and the resulting errors can cause inaccurate gas volumes and accounting imbalances. A previous PRCI research project tested whether recent advances in ultrasonic meters may allow them to function without measurement error in pulsating flows. This project expanded on the previous work and tested similar ultrasonic meters to look for relationships between ultrasonic meter tra
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Igor D. Kaganovich, Oleg V. Polomarov, and Constantine E. Theodosiou. Landau Damping and Anomalous Skin Effect in Low-pressure Gas Discharges: Self-consistent Treatment of Collisionless Heating. Office of Scientific and Technical Information (OSTI), 2004. http://dx.doi.org/10.2172/821522.

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Bezler, P., Y. Wang, and M. Reich. Response margins investigation of piping dynamic analyses using the independent support motion method and PVRC (Pressure Vessel Research Committee) damping. Office of Scientific and Technical Information (OSTI), 1988. http://dx.doi.org/10.2172/7083039.

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Galili, Naftali, Roger P. Rohrbach, Itzhak Shmulevich, Yoram Fuchs, and Giora Zauberman. Non-Destructive Quality Sensing of High-Value Agricultural Commodities Through Response Analysis. United States Department of Agriculture, 1994. http://dx.doi.org/10.32747/1994.7570549.bard.

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The objectives of this project were to develop nondestructive methods for detection of internal properties and firmness of fruits and vegetables. One method was based on a soft piezoelectric film transducer developed in the Technion, for analysis of fruit response to low-energy excitation. The second method was a dot-matrix piezoelectric transducer of North Carolina State University, developed for contact-pressure analysis of fruit during impact. Two research teams, one in Israel and the other in North Carolina, coordinated their research effort according to the specific objectives of the proj
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