Relevant bibliographies by topics / Height-diameter models

Contents

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

Academic literature on the topic 'Height-diameter models'

Author: Grafiati
Published: 2 June 2025
Last updated: 31 July 2025

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Journal articles on the topic "Height-diameter models"

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Nanos, Nikos, Rafael Calama, Gregorio Montero, and Luis Gil. "Geostatistical prediction of height/diameter models." Forest Ecology and Management 195, no. 1-2 (2004): 221–35. http://dx.doi.org/10.1016/j.foreco.2004.02.031.

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Ahmadi, K., and Alavi SJ. "Generalized height-diameter models for Fagus orientalis Lipsky in Hyrcanian forest, Iran." Journal of Forest Science 62, No. 9 (2016): 413–21. http://dx.doi.org/10.17221/51/2016-jfs.

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Mehtätalo, Lauri, Sergio de-Miguel, and Timothy G. Gregoire. "Modeling height-diameter curves for prediction." Canadian Journal of Forest Research 45, no. 7 (2015): 826–37. http://dx.doi.org/10.1139/cjfr-2015-0054.

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Individual tree heights are needed in many situations, including estimation of tree volume, dominant height, and simulation of tree growth. However, height measurements are tedious compared to tree diameter measurements, and therefore height–diameter (H–D) models are commonly used for prediction of tree height. Previous studies have fitted H–D models using approaches that include plot-specific predictors in the models and those that do not include them. In both these approaches, aggregation of the observations to sample plots has usually been taken into account through random effects, but this
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Khadka, A., T. Subedi, M. Ghimire, B. P. Dhakal, and H. Parikka. "Diameter-height models for the Terai tree species." Banko Janakari 25, no. 1 (2015): 50–54. http://dx.doi.org/10.3126/banko.v25i1.13471.

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Tree diameter-height relationship can be used as a key input component in forest growth and yield models, and description of stand dynamics. Various models of stem diameter and height relation were developed. Those were formulated and implemented during Terai forest inventory data calculations in the Forest Resource Assessment (FRA) Nepal Project. The field inventory was conducted from December, 2010 to March, 2011. The Concentric Circular Sample Plot was designed where the diameters at breast height of all the tallied trees and the heights of the sampled trees were measured. The data were han
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Jeelani, M. Iqbal, Manish Kr Sharma, Anil Bhat, and Mansha Gul. "Validation of two parameter function height diameter models." INTERNATIONAL RESEARCH JOURNAL OF AGRICULTURAL ECONOMICS AND STATISTICS 9, no. 2 (2018): 331–34. http://dx.doi.org/10.15740/has/irjaes/9.2/331-334.

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Meng, Qingmin, Chris J. Cieszewski, Mike R. Strub, and Bruce E. Borders. "Spatial regression modeling of tree height–diameter relationships." Canadian Journal of Forest Research 39, no. 12 (2009): 2283–93. http://dx.doi.org/10.1139/x09-136.

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Tree height–diameter relationships are usually studied using linear or nonlinear models, but exogenous variables, especially spatially autocorrelated and dependent variables of tree diameter or height, are not often considered in height–diameter modeling. Three types of spatial regression models — spatial lag model, spatial error model, and spatial Durbin process model — are explored in this study. The height–diameter relationships are modeled using the spatial regression models to investigate the effects of spatial dependence and spatial autocorrelation and the roles of the exogenous variable
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Zhang, Xiongqing, Aiguo Duan, Jianguo Zhang, and Congwei Xiang. "Estimating Tree Height-Diameter Models with the Bayesian Method." Scientific World Journal 2014 (2014): 1–9. http://dx.doi.org/10.1155/2014/683691.

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Six candidate height-diameter models were used to analyze the height-diameter relationships. The common methods for estimating the height-diameter models have taken the classical (frequentist) approach based on the frequency interpretation of probability, for example, the nonlinear least squares method (NLS) and the maximum likelihood method (ML). The Bayesian method has an exclusive advantage compared with classical method that the parameters to be estimated are regarded as random variables. In this study, the classical and Bayesian methods were used to estimate six height-diameter models, re
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Ferraz Filho, Antonio Carlos, Blas Mola-Yudego, Andressa Ribeiro, José Roberto Soares Scolforo, Rodolfo Araújo Loos, and Henrique Ferraço Scolforo. "HEIGHT-DIAMETER MODELS FOR Eucalyptus sp. PLANTATIONS IN BRAZIL." CERNE 24, no. 1 (2018): 9–17. http://dx.doi.org/10.1590/01047760201824012466.

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INADA, Mitsuo. "The lognormal distribution models for diameter and height distributions." Japanese Journal of Forest Planning 19 (1992): 43–60. http://dx.doi.org/10.20659/jjfp.19.0_43.

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Indrajaya, Yonky, Mohamad Siarudin, Muhammad Abdul Qirom, et al. "Nonlinear Height-Diameter Models for Anthocephalus macrophyllus in Indonesia." International Journal of Design & Nature and Ecodynamics 19, no. 4 (2024): 1099–108. http://dx.doi.org/10.18280/ijdne.190401.

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Dissertations / Theses on the topic "Height-diameter models"

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Smith, Michael C. "Diameter and height increment and mortality functions for loblolly pine trees in thinned and unthinned plantations." Thesis, This resource online, 1994. http://scholar.lib.vt.edu/theses/available/etd-03242009-040942/.

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Lindner, Gerard Eckard. "Development of potential height growth and diameter increment models for the parameterisation of an individual tree growth model for Pinus elliottii plantations in South Africa." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/86621.

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Thesis (MScFor)--Stellenbosch University, 2014.<br>ENGLISH ABSTRACT: Individual tree models, as opposed to stand models, have the potential to greatly improve sensitivity of forest growth models to changing conditions such as silvicultural amendments, irregular stand structures, etc. It was the purpose of this study to extend two sub-components of a European individual tree growth model to introduce individual tree growth modelling concepts in South Africa using Pinus elliottii as a study species. Two main objectives were established: Modelling the potential height of stands across differ
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Bienert, Anne, Louis Georgi, Matthias Kunz, Hans-Gerd Maas, and Oheimb Goddert von. "Comparison and Combination of Mobile and Terrestrial Laser Scanning for Natural Forest Inventories." Molecular Diversity Preservation International MDPI, 2018. https://tud.qucosa.de/id/qucosa%3A31826.

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Terrestrial laser scanning (TLS) has been successfully used for three-dimensional (3D) data capture in forests for almost two decades. Beyond the plot-based data capturing capabilities of TLS, vehicle-based mobile laser scanning (MLS) systems have the clear advantage of fast and precise corridor-like 3D data capture, thus providing a much larger coverage within shorter acquisition time. This paper compares and discusses advantages and disadvantages of multi-temporal MLS data acquisition compared to established TLS data recording schemes. In this pilot study on integrated TLS and MLS data proce
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Xu, Wenli. "Developing ecoregion-based height-diameter models and reference-age invariant polymorphic height and site index curves for black spruce and jack pine in Manitoba." 2004. http://hdl.handle.net/1993/7867.

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Eight different height-diameter models, five height prediction models with stand variables as predictors and six height and site index models were selected, examined, compared and developed for black spruce (Picea mariana [Mill.] B.S.P.) and jack pine (Pinus banksiana Lamb.) in Manitoba. Eight different height-diameter models were fitted using nonlinear modeling techniques and compared in each of the five ecoregions in Manitoba: Churchill River Upland (Ecoregion 88); Hayes River Upland (Ecoregion 89); Lac Seul Upland (Ecoregion 90); Lake of the Woods (Ecoregion 91); Mid-Boreal Lowland (Ecoreg
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Msaouak, Khaoula. "Modeling height-diameter relationship in pinus pinaster ait. in the forest intervention zone of Lomba, NE-Portugal." Master's thesis, 2016. http://hdl.handle.net/10198/13144.

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In this work, the relationship between diameter at breast height (d) and total height (h) of individual-tree was modeled with the aim to establish provisory height-diameter (h-d) equations for maritime pine (Pinus pinaster Ait.) stands in the Lomba ZIF, Northeast Portugal. Using data collected locally, several local and generalized h-d equations from the literature were tested and adaptations were also considered. Model fitting was conducted by using usual nonlinear least squares (nls) methods. The best local and generalized models selected, were also tested as mixed models applying a first-or
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Freire, João Pedro Abranches. "Modelação do crescimento e da produção de pinha no pinheiro manso." Doctoral thesis, 2009. http://hdl.handle.net/10400.5/2020.

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Doutoramento em Engenharia Florestal - Instituto Superior de Agronomia<br>The aim of present thesis was the development of a tree growth model and a cone production model for umbrella pine (Pinus pinea L.) in pure and mixed, even and uneven aged stands at Charneca Miocénica e Pliocénica dos Vales do Tejo e do Sado (Portugal). To model tree level growth model submodels were built to predict height, crown diameter, crown length and diameter increment. Tree cone production was modeled in two stages. First, the cone production probability was modeled. In the second phase the cone fresh weight
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Iamshchikov, Vladislav. "Evaluation of management models in a trial of Castanea sativa Mill. coppice in Northern Portugal." Master's thesis, 2017. http://hdl.handle.net/10198/14437.

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The sweet chestnut (Castanea sativa Mill.) is a valuable species in Portugal, namely in Northeast region, for both fruit and timber. So, a differentiation of management options is needed as an alternative to the traditional practices. The main target of our study was to evaluate three different silvicultural management models that have been tested since 1994 in a trial established in “Serra da Padrela” (41º 30’ 41’’N, 7º 37’ 15’’ W ), North of Portugal. This trial is composed by four permanent plots established in a coppice that resulted from the final cut of a sweet chestnut high-forest stand
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Books on the topic "Height-diameter models"

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Yuancai, Lei. Remarks on height-diameter modeling. U.S. Dept. of Agriculture, Forest Service, Southern Research Station, 2001.

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Yuancai, Lei. Remarks on height-diameter modeling. U.S. Dept. of Agriculture, Forest Service, Southern Research Station, 2001.

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Garman, Steven L. Asymptotic height-diameter equations for twenty-four tree species in western Oregon. College of Forestry, Forest Research Laboratory, Oregon State University, 1995.

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1955-, Garman Steven L., and Oregon State University. Forest Research Laboratory., eds. Asymptotic height-diameter equations for twenty-four tree species in western Oregon. College of Forestry, Forest Research Laboratory, Oregon State University, 1995.

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Hann, David W. Reanalysis of the SMC-ORGANON equations for diameter-growth rate, height-growth rate, and mortality rate of Douglas-fir. Forest Research Laboratory, Oregon State University, 2006.

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Hann, David W. Reanalysis of the SMC-ORGANON equations for diameter-growth rate, height-growth rate, and mortality rate of Douglas-fir. Forest Research Laboratory, Oregon State University, 2006.

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Hann, David W. Reanalysis of the SMC-ORGANON equations for diameter-growth rate, height-growth rate, and mortality rate of douglas-fir. Forest Research Laboratory, Oregon State University, 2006.

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Hann, David W. Equations for predicting height-to-crown-base, 5-year diameter-growth rate, 5-year height-growth rate, 5-year mortality rate, and maximum size-density trajectory for Douglas-fir and western hemlock in the coastal region of the Pacific Northwest. Oregon State University, College of Forestry, Forest Research Laboratory, 2003.

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Asymptotic height-diameter equations for twenty-four tree species in western Oregon. College of Forestry, Forest Research Laboratory, Oregon State University, 1995.

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Ritchie, Martin W. Development of tree height and diameter growth equations for mid-Willamette Valley Douglas-fir. 1985.

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Book chapters on the topic "Height-diameter models"

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He, Ben, Na Lv, and Ruilong Shi. "Design Optimization of Jacket Substructure of Offshore Wind Turbine." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-4355-1_69.

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AbstractThe design optimization of the jacket substructure could reduce the cost of energy and the correlated carbon cost. The mass of jacket is optimized with respect to maximum stress and displacement responses. Wind and dead loads were applied at the top of the jacket referenced point. Wave load and foundation boundary were applied using Dload and UEL function in the Abaqus subroutine. Six different parameters were evaluated, including the pile height above mudline, the base width, brace thickness and diameter, and the main leg thickness and diameter. The parametrically optimized model has
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Pataki, Balint, Kinga Nagy, and Binh Thanh Nguyen. "Comparing Performance of Linear Regression Models Trained on Systematic Forest Measurement Datasets to Predict Diameter at Breast Height." In Future Data and Security Engineering. Big Data, Security and Privacy, Smart City and Industry 4.0 Applications. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-8296-7_37.

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Zhang, Bo, Shuhui Lv, Jiaqi Wu, and Shiding Su. "Fatigue Response Analysis of Steel Pipe Piles with Super Length to Diameter Ratio Under Adverse Sea Conditions." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-2417-8_9.

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AbstractAs an important component of seaport structures, steel pipe piles are subjected to cyclic loads over long periods of time in marine environments, especially when steel pipe piles are subjected to large bending moments, where the weld position is susceptible to fatigue damage. Based on an engineering example, a load-pile-soil triaxial fatigue analysis model was established to study the fatigue response rule of steel pipe piles under wave load, and the following conclusions were obtained: Regardless of whether the factor of weld is considered, the wave load with the wave height below 3.5
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Wydra, Małgorzata, Grzegorz Sadowski, Piotr Dolny, and Jadwiga Fangrat. "Crack Propagation Analysis of Model Concrete Columns with BFRP Reinforcement Bars." In Springer Proceedings in Materials. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-72955-3_43.

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AbstractAvailable studies on concrete structural parts with FRP reinforcement bars concern mostly investigations on bent elements (beams, slabs) [1, 2]. There are also available a few theoretical analyses on columns [3–5]. Though, there is still little experimental data concerning concrete columns with FRP bars [6–8], especially subjected to eccentric load, as also underlined in the review article [9]. This research aims to fulfill this research gap. Also, basalt FRP bars were chosen as relatively new type of non-metallic bars with low ecological impact [1].A total of eight columns with the he
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Bohlman, Stephanie A. "Tropical Tree Allometry: Variation, Theory, and Application." In The First 100 Years of Research on Barro Colorado: Plant and Ecosystem Science. Smithsonian Institution Scholarly Press, 2024. https://doi.org/10.5479/si.26880727.

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&lt;p dir="ltr"&gt;Tree allometry, the relationship between different tree dimensions such as diameter, height, and crown area, is important for understanding physiological and structural constraints on trees, such as growing tall enough to access light while resisting wind damage. Understanding these relationships is also essential for calculating tree and forest biomass. Data from Barro Colorado Island (BCI) have shown that while crown size increases as a power of diameter, height approaches an asymptote as diameter increases. Diameter-to-height allometries deviate from predictions of metabo
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A Ngon René, Menoh, Tsoata Esaïe, Tsouga Manga Milie Lionelle, and Owona Ndongo Pierre-André. "Carbon Storage of some Rubber Trees (Hevea brasiliensis) Clones in HEVECAM’s Plantations in South Cameroon." In Biodiversity of Ecosystems [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.99297.

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The objective of this work was to estimate the quantity of carbon stored by four main clones of rubber tree cultivated in South Cameroon: GT 1, PB 217, PR 107 and RRIC 100. The forest inventory method was used to measure trees morphological parameters, the latter used to calculate carbon storage using the allometric equation of Wauters et al., (2008). The main morphological parameters measured were: leaf area index (LAI), circumference (C), diameter at breast height (DBH) and total tree height (h). Comparing the morphological parameters of clones two by two using a Dunn test, we observe signif
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Chehreh, Babak, Carlos Viegas, and Alexandra Moutinho. "Tree geometrical attributes measurement using UAV-born laser scanning." In Advances in Forest Fire Research 2022. Imprensa da Universidade de Coimbra, 2022. http://dx.doi.org/10.14195/978-989-26-2298-9_206.

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Forestry is the science and craft of creating, managing, using, conserving and repairing forests, woodlands, and associated resources for human and environmental benefits. Forest management as one of the categories of forestry, is essential to exploit forest’s full economic and environmental value while ensuring the safety and resilience of the territory against natural or anthropogenic threats such as wildfires. UAV-based remote sensing is a powerful tool for forestry related tasks and measurements. Various studies and experiments have been conducted by different teams all around the world;
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Roni, Rezaul, Shah Nurul Hasnat Sadi, and Abdullah Al Mamun. "Quantifying Aboveground Carbon Stock at Species Level Using TLS LiDAR and UAV Photogrammetry for Urban Trees." In Advanced Geoinformatics - Techniques and Applications [Working Title]. IntechOpen, 2025. https://doi.org/10.5772/intechopen.1009808.

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Urbanization is increasing the depletion of natural carbon sinks and the intensification of urban heat islands, creating urban vegetation critical for carbon sequestration and climate regulation. In this study, a fusion approach was applied that combined Terrestrial Laser Scanning (TLS) Light Detection and Ranging (LiDAR) with high-resolution Unmanned Aerial Vehicle (UAV) imagery to estimate the aboveground carbon stock of individual trees along Manik Mia Avenue, Dhaka, Bangladesh. UAV imageries and dense point cloud data from TLS LiDAR were collected and georeferenced using Real-Time Kinemati
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Roßmann, Jürgen, Martin Hoppen, and Arno Bücken. "GML-Based Data Management and Semantic World Modelling for a 4D Forest Simulation and Information System." In Geospatial Intelligence. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-8054-6.ch020.

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Various types of 3D simulation applications benefit from realistic forest models. They range from flight simulators for entertainment to harvester simulators for training and tree growth simulations for research and planning. This paper's 4D forest simulation and information system integrates the necessary methods for data extraction, modelling and management. Using modern methods of semantic world modelling, tree data can efficiently be extracted from remote sensing data. The derived forest models contain position, height, crown volume, type and diameter of each tree. This data is modelled us
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Vardé Oscar Alberto, de Mello Luiz Guilherme, Aradas Rodolfo, and Guidobono Rodolfo Eduardo. "Juan M. de Rosas Water Treatment Plant Interaction between Deep Foundations and Adjacent Infrastructure on Soft Clays." In From Fundamentals to Applications in Geotechnics. IOS Press, 2015. https://doi.org/10.3233/978-1-61499-603-3-1804.

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Aguas del Paran&amp;aacute;, a joint-venture by Odebrecht (Brazil), Cartellone, Roggio and Supercemento (Argentina), was awarded by AySA, local water and sewer public company, with the contract to build Juan Manuel de Rosas water treatment plant. Given the site is in a lowland flood prone area, there are 3.5 m to 8 m high embankments around the processing units. The main structures of the plant were founded on 50 cm diameter SCAC centrifuged piles driven to dense silty sands and sands. An approach comprised of analytical methods, numerical models and interpretation from monitoring system was u
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Conference papers on the topic "Height-diameter models"

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Rupsys, Petras. "STOCHASTIC SIMULATION OF SELF-THINNING." In 24th SGEM International Multidisciplinary Scientific GeoConference 2024. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/3.1/s14.46.

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Understanding the principles of self-thinning forest ecosystems is essential for taking modern management techniques into practice. The spatial distribution of the surviving trees in a stand is influenced by a variety of factors, including tree mortality. In young forests, competition has a major role in determining spatial mortality; in older forests, random changes in the environment have a major role. The dynamics of the number of living and dead trees in the forests of central Lithuania will be addressed in this study. The Gompertz type mixed effect parameters univariate stochastic differe
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Kowalski, Mikolaj, and Lukasz Ortyl. "INTEGRATING GEODETIC UNDERGROUND UTILITY DATASETS WITH BIM: IFC 4.3 FOR IMPROVED STRUCTURAL DESIGN IN POLAND." In 24th SGEM International Multidisciplinary Scientific GeoConference 2024. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/2.1/s08.16.

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Numerous studies have examined the potential integration of Building Information Modeling (BIM) with Geographic Information Systems (GIS), typically focusing on simplifying complex BIM data for presentation within a GIS environment. However, there is a unique circumstance with extensive geodetic databases that remain untapped in construction processes in Poland. The emergence of the more applicable IFC format version 4.3, particularly relevant to surveying, presents an opportunity. The article proposes leveraging geodetic datasets, specifically underground utilities, to enhance BIM-based struc
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Suryanarayanan, Saikishan, and Gerald L. Morrison. "Effect of Tooth Height, Tooth Width and Shaft Diameter on Carry-Over Coefficient of Labyrinth Seals." In ASME Turbo Expo 2009: Power for Land, Sea, and Air. ASMEDC, 2009. http://dx.doi.org/10.1115/gt2009-59246.

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The accuracy of rotodynamic analysis of any turbomachinery is dependent upon the accuracy of seal leakage prediction. An expression for the leakage through a labyrinth seal can be developed by combining the coefficient of discharge under each tooth and a carryover coefficient to account for the dissipation of kinetic energy of the jet emerging from under each tooth in the subsequent cavity through turbulence viscosity interaction. While most popularly used leakage models consider the carry-over coefficient only as a function of clearance and pitch, it was established in our earlier work that R
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Popovas, Darius, Valentas Mikalauskas, Dominykas Šlikas, Simonas Valotka, and Tautvydas Šorys. "Individual Tree Parameters Estimation from Terrestrial Laser Scanner Data." In Environmental Engineering. VGTU Technika, 2017. http://dx.doi.org/10.3846/enviro.2017.230.

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Tree models and information on the various characteristics of trees and forests are required for forest management, city models, carbon accounting and the management of assets. In order to get precise characteristics and information, tree modelling must be done at individual tree level as it represents the interaction process between trees. For sustainable forest management, more information is needed, however, the traditional methods of investigating forest parameters such as, tree height, diameter at breast height, crown diameter, stem curve and stem mapping or tree location are complex and
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Patel, Harshkumar, and Hong Zhou. "Analysis and Synthesis of Conical Coil Springs." In ASME 2021 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/detc2021-69971.

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Abstract Springs are mechanical devices that are employed to resist forces, store energy, absorb shocks, mitigate vibrations, or maintain parts contacting each other. Spring wires are commonly coiled in the forms of helixes for either extension or compression. Helical springs usually have cylindrical shapes that have constant coil diameter, constant pitch and constant spring rate. Unlike conventional cylindrical coil springs, the coil diameter of conically coiled springs is variable. They have conical or tapered shapes that have a large coil diameter at the base and a small coil diameter at th
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Chyu, Minking K., Sean C. Siw, and Hee Koo Moon. "Effects of Height-to-Diameter Ratio of Pin Element on Heat Transfer From Staggered Pin-Fin Arrays." In ASME Turbo Expo 2009: Power for Land, Sea, and Air. ASMEDC, 2009. http://dx.doi.org/10.1115/gt2009-59814.

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A pin-fin array is a compact heat exchanger and widely used for cooling of turbine airfoils. This study is to experimentally examine the effects of pin height or height-to-diameter ratio (H/D) on the heat transfer from a pin-fin array. The test models are designed to facilitate three different H/D ratios, from 2 to 4, with a staggered pin-fin array of inter-pin spacing 2.5 times the pin diameter (S/D = X/D = 2.5) in both longitudinal and transverse directions. The Reynolds number ranges from 10,000 to 30,000. The experiment uses a hybrid technique based on the transient liquid-crystal imaging
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Funazaki, K., and K. Hachiya. "Systematic Numerical Studies on Heat Transfer and Aerodynamic Characteristics of Impingement Cooling Devices Combined With Pins." In ASME Turbo Expo 2003, collocated with the 2003 International Joint Power Generation Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/gt2003-38256.

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This paper deals with extensive numerical studies on heat transfer characteristics and fluid dynamics inside several impingement cooling devices combined with pins. As a numerical analysis tool, a commercial software CFX-4.4, AEA Technology, is used. The purpose of this paper is two-fold. First the validity of the numerical tool and grids adopted in this study is checked through the comparison of the numerical results with the experimental counterparts. Turbulence models available in the software are thoroughly tested so as to screen out a turbulence model among them which can reproduce the ex
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Shams, Ehsan, Andreas Gross, and Hermann Fasel. "Performance Analysis of Solar Chimneys of Different Physical Scales Using CFD." In ASME 2011 5th International Conference on Energy Sustainability. ASMEDC, 2011. http://dx.doi.org/10.1115/es2011-54537.

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The available power of a solar chimney power plant (SCPP) is investigated based on axi-symmetric simulations that are carried out with Ansys Fluent. Different combinations of tower height and collector radius are investigated. The simulations show that the available power is proportional to the product of tower height and collector area. This scaling law holds for a wide parameter range, even for relatively disparate ratios of tower height and collector diameter. Three different turbulence models are employed for the calculations of the large power plants. Results obtained with a Reynolds stre
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LINKEVIČIUS, Edgaras, Heinz RÖHLE, and Jens SCHRÖDER. "BIOMASS MODELS FOR SHORT ROTATION WILLOW PLANTATIONS IN LITHUANIA." In RURAL DEVELOPMENT. Aleksandras Stulginskis University, 2018. http://dx.doi.org/10.15544/rd.2017.028.

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Despite of increasing areas of short rotation willow plantations in Lithuania, only few studies have been done so far regarding the biomass production in these plantations. To fill this gap, the aim of this study was to develop biomass equations for fresh and for oven drywillow biomass and to estimate the yield of short rotation plantations as expressed in fresh and oven dry biomass. The data required by this study was gathered in the western part of Lithuania, in the Šilutė and Tauragė regions. For this purpose, sample plots were established in 21 short rotation willow plantations managed by
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Ahmed, M., I. Hassan, and N. Esmail. "Modeling of the Onset of Gas Entrainment Through a Finite-Side Branch." In ASME 2002 Joint U.S.-European Fluids Engineering Division Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/fedsm2002-31242.

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A theoretical investigation has been conducted for the prediction of the critical height at the onset of gas entrainment during single discharge from a stratified two-phase region through a side branch with a finite diameter. Two different models have been developed including a new criterion for the onset of gas entrainment, a simplified point-sink model and a finite-branch model. The results of the predicted critical heights at the onset of gas entrainment showed that the finite-branch model approaches the physical limits at low Froude numbers. However, as the values of the Froude number incr
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Reports on the topic "Height-diameter models"

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Olsen and Wilson. L52145 Geomechanical Analysis and Design Considerations for Thin-Bedded Salt Caverns. Pipeline Research Council International, Inc. (PRCI), 2005. http://dx.doi.org/10.55274/r0011349.

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he bedded salt formations located throughout the United States are layered and interspersed with non-salt materials such as anhydrite, shale, dolomite and limestone. The salt layers often contain significant impurities. GRI and DOE have initialized this research proposal in order to increase the gas storage capabilities by providing operators with improved geotechnical design and operating guidelines for thin bedded salt caverns. Terralog has summarized the geologic conditions, pressure conditions and critical design factors that may lead to: Fracture in heterogeneous materials; Differential d
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Gage, Edward, Linda Zeigenfuss, Hanem Abouelezz, Allison Konkowski, David Cooper, and Therese Johnson. Vegetation response to Rocky Mountain National Park’s elk and vegetation management plan: Analysis of 2008–2018 data. National Park Service, 2023. http://dx.doi.org/10.36967/2299264.

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Rocky Mountain National Park (RMNP) developed the Elk and Vegetation Management Plan (EVMP) to address well-documented declines in the ecological condition of aspen stands and riparian communities from high levels of elk herbivory. The EVMP aims to reduce the impacts of elk on vegetation and restore the natural range of variability in the elk population and affected plant communities, including preventing the loss of aspen clones within high elk-use areas, restoring montane riparian willow cover and height within suitable habitat, and reducing of levels of elk grazing on herbaceous vegetation.
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RESEARCH ON DYNAMIC LOAD CARRYING CAPACITY OF ASSEMBLED INTERNAL STIFFENING WIND TURBINE TOWER BASED ON MULTI-SCALE MODELING. The Hong Kong Institute of Steel Construction, 2022. http://dx.doi.org/10.18057/icass2020.p.513.

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"The development of wind power technology requires higher and larger wind turbines, which requires the bearing tower to increase its height and diameter. The assembled internal stiffened wind turbine tower divides the tower into multiple arc plates along the longitudinal direction, which can be easy transported to the site for assembly. That can solve the problem of height limit in highway transportation. At the same time, the internal stiffener provides better stability and can replace the bottom tower section of conventional wind turbine tower. In this study, the tower section of assembled i
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RESEARCH ON DYNAMIC LOAD CARRYING CAPACITY OF ASSEMBLED INTERNAL STIFFENING WIND TURBINE TOWER BASED ON MULTI-SCALE MODELING. The Hong Kong Institute of Steel Construction, 2023. http://dx.doi.org/10.18057/ijasc.2023.19.1.11.

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The development of wind power technology requires higher and larger wind turbines, which requires the bearing tower to increase its height and diameter. The assembled internal stiffened wind turbine tower divides the tower into multiple arc plates along the longitudinal direction, which can be easy transported to the site for assembly. That can solve the problem of height limit in highway transportation. At the same time, the internal stiffener provides better stability and can replace the bottom tower section of conventional wind turbine tower. In this study, the tower section of assembled in
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