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Journal articles on the topic 'Simulated Model'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Crobeddu, E., and S. Bennis. "A New Model for Simulating TSS Washoff in Urban Areas." Applied and Environmental Soil Science 2011 (2011): 1–9. http://dx.doi.org/10.1155/2011/318765.

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This paper presents the formulation and validation of the conceptual Runoff Quality Simulation Model (RQSM) that was developed to simulate the erosion and transport of solid particles in urban areas. The RQSM assumes that solid particle accumulation on pervious and impervious areas is infinite. The RQSM simulates soil erosion using rainfall kinetic energy and solid particle transport with linear system theory. A sensitivity analysis was conducted on the RQSM to show the influence of each parameter on the simulated load. Total suspended solid (TSS) loads monitored at the outlet of the borough o

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2

Kochański, W., M. Boeff, Z. Hashemiyan, W. J. Staszewski, and P. K. Verma. "Modelling and Numerical Simulations of In-Air Reverberation Images for Fault Detection in Medical Ultrasonic Transducers: A Feasibility Study." Journal of Sensors 2015 (2015): 1–14. http://dx.doi.org/10.1155/2015/796439.

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A simplified two-dimensional finite element model which simulates the in-air reverberation image produced by medical ultrasonic transducers has been developed. The model simulates a linear array consisting of 128 PZT-5A crystals, a tungsten-epoxy backing layer, an Araldite matching layer, and a Perspex lens layer. The thickness of the crystal layer is chosen to simulate pulses centered at 4 MHz. The model is used to investigate whether changes in the electromechanical properties of the individual transducer layers (backing layer, crystal layer, matching layer, and lens layer) have an effect on

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Vizcaíno, Miren, William H. Lipscomb, William J. Sacks, Jan H. van Angelen, Bert Wouters, and Michiel R. van den Broeke. "Greenland Surface Mass Balance as Simulated by the Community Earth System Model. Part I: Model Evaluation and 1850–2005 Results." Journal of Climate 26, no. 20 (2013): 7793–812. http://dx.doi.org/10.1175/jcli-d-12-00615.1.

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Abstract The modeling of the surface mass balance (SMB) of the Greenland Ice Sheet (GIS) requires high-resolution models in order to capture the observed large gradients in the steep marginal areas. Until now, global climate models have not been considered suitable to model ice sheet SMB owing to model biases and insufficient resolution. This study analyzes the GIS SMB simulated for the period 1850–2005 by the Community Earth System Model (CESM), which includes a new ice sheet component with multiple elevation classes for SMB calculations. The model is evaluated against observational data and

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4

Wang, Jun, and Hai Xia Wang. "Air Flow in Large Space Building with CFD Model and Local Test." Advanced Materials Research 213 (February 2011): 260–66. http://dx.doi.org/10.4028/www.scientific.net/amr.213.260.

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Simulation with CFD and local test are two main methods in study on air flow in large space building. This paper tests and simulates thermal comfort and air distribution of existing air- conditioning mode of some exhibition center. Through comparison and analysis on existing and simulated air-conditioning pattern, draw a conclusion that it’s feasible to simulate thermal comfort and air distribution of air-conditioning. And the research is important to guide energy efficiency and design optimization of air-conditioning system in large space building.

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Montaseri, Soheila, Fatemeh Zare-Mirakabad, and Mohammad Ganjtabesh. "Evaluating the quality of SHAPE data simulated by k-mers for RNA structure prediction." Journal of Bioinformatics and Computational Biology 15, no. 06 (2017): 1750023. http://dx.doi.org/10.1142/s0219720017500238.

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Finding an effective measure to predict a more accurate RNA secondary structure is a challenging problem. In the last decade, an experimental method, known as selective [Formula: see text]-hydroxyl acylation analyzed by primer extension (SHAPE), was proposed to measure the tendency of forming a base pair for almost all nucleotides in an RNA sequence. These SHAPE reactivities are then utilized to improve the accuracy of RNA structure prediction. Due to a significant impact of SHAPE reactivity and in order to reduce the experimental costs, we propose a new model called HL-k-mer. This model simul

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Hennigs, Carlotta, Tobias Becher, and Philipp Rostalski. "Mathematical lung model for local gas exchange based on EIT-measurements." Current Directions in Biomedical Engineering 8, no. 2 (2022): 376–79. http://dx.doi.org/10.1515/cdbme-2022-1096.

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Abstract In this work we present a four compartment mathematical lung model to simulate the local gas exchange based on electrical impedance tomography (EIT) input. The model simulates the local and global time course of the volume, the gas fraction in the alveoli and the arterial partial pressure. The regional information about the distribution of ventilation and perfusion is extracted from EIT data. In order to illustrate the suitability of this approach, an ARDS patient is simulated. The results show good agreement with measurement data for large portions of the time and seem promising e.g.

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Stecki, J. "Correlations in simulated model bilayers." Journal of Chemical Physics 120, no. 7 (2004): 3508–16. http://dx.doi.org/10.1063/1.1641002.

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8

Tonouchi, J. H., T. J. Held, and H. C. Mongia. "A Semi-Analytical Finite Rate Two-Reactor Model for Gas Turbine Combustors." Journal of Engineering for Gas Turbines and Power 120, no. 3 (1998): 495–501. http://dx.doi.org/10.1115/1.2818172.

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A gas turbine combustor is modeled using a two-reactor, finite-rate mixing and chemistry gas particle approach. The first reactor, used to simulate combustion in the primary zone, permits independent definition of the rates of macromixing and micromixing within the reactor, and the amount of premixing of fuel and air entering the reactor. Finite-rate macromixing is simulated by consideration of the fluid particle residence time distribution frequency function and the ages of the particles in the reactor. Finite-rate micromixing is simulated using a modified Coalescence-Dispersion (C-D) model.

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Palmiéri, J., J. C. Orr, J. C. Dutay, et al. "Simulated anthropogenic CO<sub>2</sub> uptake and acidification of the Mediterranean Sea." Biogeosciences Discussions 11, no. 5 (2014): 6461–517. http://dx.doi.org/10.5194/bgd-11-6461-2014.

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Abstract. Constraints on the Mediterranean Sea's uptake of anthropogenic CO2 are limited, coming only from data-based approaches that disagree by more than a factor of two. Here we simulate this marginal sea's anthropogenic carbon uptake by applying a perturbation approach in a high-resolution regional model. Our model simulates that between 1800 and 2001, basin-wide CO2 uptake by the Mediterranean Sea has increased by 1.0 Pg C, a lower limit based on the corresponding model evaluation with CFC-12, indicating inadequate simulated deep-water ventilation. Furthermore, by testing a data-based app

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Zeng, Yi, Jun Lin Tao, Yong Yao, Xiao Ling Liu, and Qian Hui Ren. "Application of Random Aggregate Model to the Problem of Concrete Penetration." Advanced Materials Research 446-449 (January 2012): 546–49. http://dx.doi.org/10.4028/www.scientific.net/amr.446-449.546.

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Penetration of concrete targets was simulated based on self-compiled program generating two-dimensional random aggregate model. Random convex polygons were used to simulate the aggregate particles of concrete, HJC model to describe constitutive relations of the aggregates and mortar while concrete targets are subjected to large strains, high pressure and high strain rate. With this model, the Forrestal's penetration test was simulated by ls-dyna software. By comparing the calculated results with the test data, It is shown that random aggregate model can be applied to simulate the dynamic destr

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Tett, Simon F. B., Jonathan M. Gregory, Nicolas Freychet, Coralia Cartis, Michael J. Mineter, and Lindon Roberts. "Does Model Calibration Reduce Uncertainty in Climate Projections?" Journal of Climate 35, no. 8 (2022): 2585–602. http://dx.doi.org/10.1175/jcli-d-21-0434.1.

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Abstract Uncertainty in climate projections is large as shown by the likely uncertainty ranges in equilibrium climate sensitivity (ECS) of 2.5–4 K and in the transient climate response (TCR) of 1.4–2.2 K. Uncertainty in model projections could arise from the way in which unresolved processes are represented, the parameter values used, or the targets for model calibration. We show that, in two climate model ensembles that were objectively calibrated to minimize differences from observed large-scale atmospheric climatology, uncertainties in ECS and TCR are about 2–6 times smaller than in the CMI

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Mann, G. W., K. S. Carslaw, D. V. Spracklen, et al. "Description and evaluation of GLOMAP-mode: a modal global aerosol microphysics model for the UKCA composition-climate model." Geoscientific Model Development 3, no. 2 (2010): 519–51. http://dx.doi.org/10.5194/gmd-3-519-2010.

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Abstract. A new version of the Global Model of Aerosol Processes (GLOMAP) is described, which uses a two-moment pseudo-modal aerosol dynamics approach rather than the original two-moment bin scheme. GLOMAP-mode simulates the multi-component global aerosol, resolving sulfate, sea-salt, dust, black carbon (BC) and particulate organic matter (POM), the latter including primary and biogenic secondary POM. Aerosol processes are simulated in a size-resolved manner including primary emissions, secondary particle formation by binary homogeneous nucleation of sulfuric acid and water, particle growth by

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Mann, G. W., K. S. Carslaw, D. V. Spracklen, et al. "Description and evaluation of GLOMAP-mode: a modal global aerosol microphysics model for the UKCA composition-climate model." Geoscientific Model Development Discussions 3, no. 2 (2010): 651–734. http://dx.doi.org/10.5194/gmdd-3-651-2010.

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Abstract. A new version of the Global Model of Aerosol Processes (GLOMAP) is described, which uses a two-moment modal aerosol scheme rather than the original two-moment bin scheme. GLOMAP-mode simulates the multi-component global aerosol, resolving sulphate, sea-salt, dust, black carbon (BC) and particulate organic matter (POM), the latter including primary and biogenic secondary POM. Aerosol processes are simulated in a size-resolved manner including primary emissions, secondary particle formation by binary homogeneous nucleation of sulphuric acid and water, particle growth by coagulation, co

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Campforts, Benjamin, Wolfgang Schwanghart, and Gerard Govers. "Accurate simulation of transient landscape evolution by eliminating numerical diffusion: the TTLEM 1.0 model." Earth Surface Dynamics 5, no. 1 (2017): 47–66. http://dx.doi.org/10.5194/esurf-5-47-2017.

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Abstract. Landscape evolution models (LEMs) allow the study of earth surface responses to changing climatic and tectonic forcings. While much effort has been devoted to the development of LEMs that simulate a wide range of processes, the numerical accuracy of these models has received less attention. Most LEMs use first-order accurate numerical methods that suffer from substantial numerical diffusion. Numerical diffusion particularly affects the solution of the advection equation and thus the simulation of retreating landforms such as cliffs and river knickpoints. This has potential consequenc

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15

Zuo, Hui, Jin Long Sha, Rui Guo Han, and Yi Hua Liu. "Research on Constitutive Model for Cartridge Case Materials." Advanced Materials Research 668 (March 2013): 635–39. http://dx.doi.org/10.4028/www.scientific.net/amr.668.635.

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In order to simulate the rupture process of Cartridge Case, material failure constitutive model is researched. Johnson-Cook plasticity model is given as an analytical function of equivalent plastic strain, strain rate, stress triaxiality. Johnson-Cook plasticity model and Johnson-Cook Damage initiation criterion are used to describe the plastic deformation and fracture of case for the pressure of power gas. Using the implementation of this stress-displacement and characteristic length, problem of the relationship between fracture energy and the characteristic length in finite element model is

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Kim, Daehyun, Adam H. Sobel, Anthony D. Del Genio, et al. "The Tropical Subseasonal Variability Simulated in the NASA GISS General Circulation Model." Journal of Climate 25, no. 13 (2012): 4641–59. http://dx.doi.org/10.1175/jcli-d-11-00447.1.

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Abstract The tropical subseasonal variability simulated by the Goddard Institute for Space Studies general circulation model, Model E2, is examined. Several versions of Model E2 were developed with changes to the convective parameterization in order to improve the simulation of the Madden–Julian oscillation (MJO). When the convective scheme is modified to have a greater fractional entrainment rate, Model E2 is able to simulate MJO-like disturbances with proper spatial and temporal scales. Increasing the rate of rain reevaporation has additional positive impacts on the simulated MJO. The improv

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17

Petruck, A., D. Jäger, and F. Sperling. "Dynamic simulation of the effects of combined sewage overflow on small urban streams." Water Science and Technology 39, no. 9 (1999): 235–42. http://dx.doi.org/10.2166/wst.1999.0485.

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The recently developed water quality simulation model FGSM of the German Association for Water Pollution Control (ATV) has been set up to simulate major water quality parameters of a small urban stream. After collecting the necessary input data the model was calibrated for dry weather conditions. Based on the calibrated model typical combined sewage overflow events were simulated. The model was able to simulate dry weather conditions well. For the simulation of combined sewage overflow events a typical event was simulated. The model was able to simulate high peak flows almost without damping.

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18

Silveira, Viliam Cardoso da, Daniela Buske, Régis Sperotto de Quadros, Glênio Aguiar Gonçalves, and Guilherme Jahnecke Weymar. "Fenômeno de meandro do vento e a função de autocorrelação calculada com base na concentração de poluentes simulada pelo modelo transiente 3D-GILTT." Ciência e Natura 42 (August 28, 2020): e28. http://dx.doi.org/10.5902/2179460x47026.

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The aim of this work is to present a pollutants dispersion transient model in low wind conditions to simulate the behavior of the pollutants plume in the atmosphere, considering in the model the u e v horizontal wind components simulated by the LES-PALM model. The dispersion model is based in the advection-diffusion equation and represent by this methodology the wind meandering phenomenon. The Generalized Integral Laplace Transform Technique in three dimensions (3D- GILTT) solves the transient advection-diffusion equation. The data utilized to initialize the simulations are data of the low win

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19

Baik, Jong-Jin, Seung-Bu Park, and Jae-Jin Kim. "Urban Flow and Dispersion Simulation Using a CFD Model Coupled to a Mesoscale Model." Journal of Applied Meteorology and Climatology 48, no. 8 (2009): 1667–81. http://dx.doi.org/10.1175/2009jamc2066.1.

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Abstract Flow and pollutant dispersion in a densely built-up area of Seoul, Korea, are numerically examined using a computational fluid dynamics (CFD) model coupled to a mesoscale model [fifth-generation Pennsylvania State University–National Center for Atmospheric Research Mesoscale Model (MM5)]. The CFD model used is a Reynolds-averaged Navier–Stokes equations model with the renormalization group k − ɛ turbulence model. A one-way nesting method is employed in this study. MM5-simulated data are linearly interpolated in time and space to provide time-dependent boundary conditions for the CFD m

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20

Tomshine, Jonathan, and Yiannis N. Kaznessis. "Optimization of a Stochastically Simulated Gene Network Model via Simulated Annealing." Biophysical Journal 91, no. 9 (2006): 3196–205. http://dx.doi.org/10.1529/biophysj.106.083485.

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KUMAR, G. V. KRISHNA, and J. SWAIN. "Simulation of internal waves using GM model and comparison against measurements during ARMEX-I." MAUSAM 56, no. 1 (2022): 269–74. http://dx.doi.org/10.54302/mausam.v56i1.903.

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A linear internal wave model based on the Garrett-Munk (hereafter GM) modal spectrum has been developed. The model simulates sound speed structure due to internal waves in the ocean. CTD yoyo (go up and down continuously) data collected during the ARMEX-I experiment has been utilized to validate the model. Internal waves amplitudes at the experimental site are found to be >1m. EOF and modal decomposition analyses reveal that the modal bandwidth parameter j* = 3 and modal energy damping parameter P = 1 or 2 and follows the GM suggested values. Comparison of the measured sound speed profiles

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Wang, M., S. Ghan, R. Easter, et al. "The multi-scale aerosol-climate model PNNL-MMF: model description and evaluation." Geoscientific Model Development Discussions 3, no. 4 (2010): 1625–95. http://dx.doi.org/10.5194/gmdd-3-1625-2010.

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Abstract. Anthropogenic aerosol effects on climate produce one of the largest uncertainties in estimates of radiative forcing of past and future climate change. Much of this uncertainty arises from the multi-scale nature of the interactions between aerosols, clouds and large-scale dynamics, which are difficult to represent in conventional global climate models (GCMs). In this study, we develop a multi-scale aerosol climate model that treats aerosols and clouds across different scales, and evaluate the model performance, with a focus on aerosol treatment. This new model is an extension of a mul

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Kiniry, James R., J. G. Fernandez, Fati Aziz, et al. "Tropical Tree Crop Simulation with a Process-Based, Daily Timestep Simulation Model (ALMANAC): Description of Model Adaptation and Examples with Coffee and Cocoa Simulations." Agronomy 13, no. 2 (2023): 580. http://dx.doi.org/10.3390/agronomy13020580.

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Coffee (Coffea species) and Cocoa (Theobroma cacao) are important cash crops grown in the tropics but traded globally. This study was conducted to apply the ALMANAC model to these crops for the first time, and to test its ability to simulate them under agroforestry management schemes and varying precipitation amounts. To create this simulation, coffee was grown on a site in Kaua’i, Hawai’i, USA, and cocoa was grown on a site in Sefwi Bekwai, Ghana. A stand-in for a tropical overstory tree was created for agroforestry simulations using altered parameters for carob, a common taller tropical tree

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Bonesmo, H., V. S. Baron, D. Young, G. Bélanger, and Q. Jing. "Adapting the CATIMO grass model to meadow bromegrass grown in western Canada." Canadian Journal of Plant Science 94, no. 1 (2014): 61–71. http://dx.doi.org/10.4141/cjps2013-183.

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Bonesmo, H., Baron, V. S., Young, D., Bélanger, G. and Jing, Q. 2014. Adapting the CATIMO grass model to meadow bromegrass grown in western Canada. Can. J. Plant Sci. 94: 61–71. The Canadian Timothy Model (CATIMO) simulates the growth and nutritive value of timothy grown in eastern and western Canada, Norway, and Finland, but has not been parameterized for meadow bromegrass (Bromus riparius Rehm.) grown under Canadian prairie conditions. We parameterized and evaluated the CATIMO model to simulate the dry matter (DM) yield and N concentration of meadow bromegrass grown in western Canada with da

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Rahman, M. Sayedur. "A rainfall simulation model for agricultural development in Bangladesh." Discrete Dynamics in Nature and Society 5, no. 1 (2000): 1–7. http://dx.doi.org/10.1155/s1026022600000339.

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A rainfall simulation model based on a first-order Markov chain has been developed to simulate the annual variation in rainfall amount that is observed in Bangladesh. The model has been tested in the Barind Tract of Bangladesh. Few significant differences were found between the actual and simulated seasonal, annual and average monthly. The distribution of number of success is asymptotic normal distribution. When actual and simulated daily rainfall data were used to drive a crop simulation model, there was no significant difference of rice yield response. The results suggest that the rainfall s

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Deng, Xiao Hu, Zhou De Qu, Li Wen Zhang, and Dong Ying Ju. "Modeling and Simulation of Dynamic Recrystallization of GCr15 Steel Using Cellular Automaton Method." Materials Science Forum 750 (March 2013): 156–59. http://dx.doi.org/10.4028/www.scientific.net/msf.750.156.

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A modified two-dimensional (2-D) cellular automaton (CA) model was constructed to simulate dynamic recrystallization (DRX) process of GCr15 steel. Particle stimulated nucleation (PSN) was incorporated into the CA model to determine the influence of dispersed particles on the nucleation of DRX. In addition, the model included the effects of particles on increasing the dislocation density and pinning the grain boundaries for accurate determination of micro-structural evolution during DRX. The model was applied to simulate the DRX process of GCr15 bearing steel. DRX grain size and volume fraction

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Iqbal, Javed. "Numerical Simulation of Cracking in Asphalt Concrete Through Continuum and Discrete Damage Model." International Journal for Research in Applied Science and Engineering Technology 9, no. 11 (2021): 2018——2020. http://dx.doi.org/10.22214/ijraset.2021.39123.

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Abstract: This study describes the development of Continuum and Discrete Damage Models in commercial finite element code Abaqus/Standard. The Concrete Damage Plasticity Model has been simulated, analysed, and compared the result with the experimental data. For verification, the Cohesive Zone Model has been simulated and analysed. Furthermore, the Extended Finite Element Model and concrete damage model are discussed and compared. The continuum damage model tends to simulate the complex fracture behaviour like crack initiation and propagation along with the invariance of the result, while the co

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Zhang, Hong Qing, Xian Tang Zhang, Yi Long Lou, and Wei Ping Xing. "Comparative Analysis of Wind Speed in Ventilation Hole Simulated by VOF and Euler Model." Applied Mechanics and Materials 624 (August 2014): 643–46. http://dx.doi.org/10.4028/www.scientific.net/amm.624.643.

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In order to analysis the applicability of VOF and Euler models to simulate water-air two-phase flow, VOF model and Euler model, respectively combining turbulent model, were used to simulate wind speed in ventilation hole of working gate in a hydropower station spillway tunnel with high head and large discharge in China. The results show that the dragging force simulated by Euler model is much more effective than that simulated by VOF model, causing significant increase of airflow in ventilation hole. It is obviously that wind speed simulated by Euler model is more close to the measured one, wh

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Zhao, F., and Q. Ni. "A MODEL TO SIMULATE THE RADIATIVE TRANSFER OF FLUORESCENCE IN A LEAF." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-3 (April 30, 2018): 2347–51. http://dx.doi.org/10.5194/isprs-archives-xlii-3-2347-2018.

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Light is reflected, transmitted and absorbed by green leaves. Chlorophyll fluorescence (ChlF) is the signal emitted by chlorophyll molecules in the leaf after the absorption of light. ChlF can be used as a direct probe of the functional status of photosynthetic machinery because of its close relationship with photosynthesis. The scattering, absorbing, and emitting properties of leaves are spectrally dependent, which can be simulated by modeling leaf-level fluorescence. In this paper, we proposed a Monte-Carlo (MC) model to simulate the radiative transfer of photons in the leaf. Results show th

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Wang, Ning, and Yuting Yu. "Research on Numerical Simulation Methods of Cavity Wind Noise Based on Different Turbulence Models." Journal of Physics: Conference Series 2860, no. 1 (2024): 012004. http://dx.doi.org/10.1088/1742-6596/2860/1/012004.

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Abstract In order to more accurately simulate the acoustic properties of the fluid in the cavity, this paper uses four different turbulence models, LES, Spalart-Allmaras/LES, Realizable/LES, model, to simulate and calculate the simple cavity, combined with the acoustic experimental data carried out on the cavity model, and found that the simulated experimental values of pulsating pressure from the SST-k-/LES model and the Spalart-Allmaras/LES model have a better agreement with the simulated experimental values of the cavity pulsation pressure, and the calculated sound pressure spectra obtained

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Katz, Amnon, and Brett E. Butler. "Flight model for unmanned simulated helicopters." Journal of Aircraft 29, no. 4 (1992): 521–26. http://dx.doi.org/10.2514/3.46196.

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Brooks, S. P., N. Friel, and R. King. "Classical model selection via simulated annealing." Journal of the Royal Statistical Society: Series B (Statistical Methodology) 65, no. 2 (2003): 503–20. http://dx.doi.org/10.1111/1467-9868.00399.

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Parasher, Vinod K., Phillus Toomey, Virginia Clifton, and Kenneth Merryman. "Simulated sphincterotomy in a pig model." Gastrointestinal Endoscopy 41, no. 3 (1995): 240–42. http://dx.doi.org/10.1016/s0016-5107(95)70345-4.

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Yanar, Tahsin Alp, and Zuhal Akyürek. "Fuzzy model tuning using simulated annealing." Expert Systems with Applications 38, no. 7 (2011): 8159–69. http://dx.doi.org/10.1016/j.eswa.2010.12.159.

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Weng, R. S., J. C. Wu, Z. J. Cendes, and M. H. Kryder. "Computer simulated model of thermomagnetic writing." IEEE Transactions on Magnetics 25, no. 5 (1989): 3536–38. http://dx.doi.org/10.1109/20.42359.

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Knudsen, Carsten, and Lynne Cameron. "Simulated evolution in a linguistic model." Discrete Dynamics in Nature and Society 5, no. 3 (2000): 189–201. http://dx.doi.org/10.1155/s1026022600000522.

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In this paper we present a simple evolutionary model of childrens’ language development, whose central nonlinearity is represented by noninvertible discrete dynamical systems. The underlying assumption of the model is that children learn from other children through their interactions. The concrete learning mechanism used is based on imitation, where childrens’ languages evolve through attempting to imitate other childrens' utterances. The use of imitation in evolutionary models has been used, for instance, in evolution of bird song by Kaneko and Suzuki. The model to be presented here is simila

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Li, Shuang, Zu Lu Zhang, and Yuan Yuan Sun. "Spatial Distribution of Non-Point Source Pollution in Nansihu Watershed Based on SWAT Model." Advanced Materials Research 518-523 (May 2012): 2812–15. http://dx.doi.org/10.4028/www.scientific.net/amr.518-523.2812.

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Non-point source (NPS) pollution load of N and P in Nansihu watershed were simulated based on SWAT model. The Sihe watershed was selected as typical watershed for east of the lake, and the Dongyu watershed was selected as typical watershed for west of lake. The two typical watersheds were simulated respectively, and then the models were used to simulate the other rivers basins in the Nansihu watershed. Data collected in the period from 2001 to 2007 was used for calibration, while data collected from 2008 to 2010 was used for validation. Then the spatial distribution of NPS pollution in Nansihu

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van Walsum, P. E. V. "Influence of feedbacks from simulated crop growth on integrated regional hydrologic simulations under climate scenarios." Hydrology and Earth System Sciences Discussions 8, no. 6 (2011): 10151–93. http://dx.doi.org/10.5194/hessd-8-10151-2011.

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Abstract. Climate change impact modelling of hydrologic responses is hampered by climate-dependent model parameterizations. Reducing this dependency was one of the goals of extending the regional hydrologic modelling system SIMGRO with a two-way coupling to the crop growth simulation model WOFOST. The coupling includes feedbacks to the hydrologic model in terms of the root zone depth, soil cover, leaf area index, interception storage capacity, crop height and crop factor. For investigating whether such feedbacks lead to significantly different simulation results, two versions of the model coup

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Pers, Bodil Charlotta, and Irina Persson. "Simulation of a Biogeochemical Model in Different Lakes." Hydrology Research 34, no. 5 (2003): 543–58. http://dx.doi.org/10.2166/nh.2003.0024.

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Eutrophication, caused by nutrients leached from soil and emitted from point sources, is a well-known problem in many Swedish lakes. There are several countermeasures that can be used to reduce eutrophication. A model that can simulate the biogeochemical response to different management scenarios may help with nutrient reducing strategies. Results from applications with such a model to different types of lakes are presented in this paper. The most important variables simulated by the model are dissolved nutrient concentrations (nitrogen and phosphorus) and phytoplankton. Other variables includ

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Otkin, Jason A., and Thomas J. Greenwald. "Comparison of WRF Model-Simulated and MODIS-Derived Cloud Data." Monthly Weather Review 136, no. 6 (2008): 1957–70. http://dx.doi.org/10.1175/2007mwr2293.1.

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Abstract In this study, the ability of different combinations of bulk cloud microphysics and planetary boundary layer (PBL) parameterization schemes implemented in the Weather Research and Forecasting Model to realistically simulate the wide variety of cloud types associated with an extratropical cyclone is examined. An ensemble of high-resolution model simulations was constructed for this case using four microphysics and two PBL schemes characterized by different levels of complexity. Simulated cloud properties, including cloud optical thickness, cloud water path, cloud-top pressure, and radi

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Tribbeck, Melody J., Robert J. Gurney, Elizabeth M. Morris, and David W. C. Pearson. "A new Snow-SVAT to simulate the accumulation and ablation of seasonal snow cover beneath a forest canopy." Journal of Glaciology 50, no. 169 (2004): 171–82. http://dx.doi.org/10.3189/172756504781830187.

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AbstractA new snow—soil—vegetation—atmosphere transfer (Snow-SVAT) scheme, which simulates the accumulation and ablation of the snow cover beneath a forest canopy, is presented. The model was formulated by coupling a canopy optical and thermal radiation model to a physically based multi-layer snow model. This canopy radiation model is physically based yet requires few parameters, so can be used when extensive in situ field measurements are not available. Other forest effects such as the reduction of wind speed, interception of snow on the canopy and the deposition of litter were incorporated w

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Wang, Shan Yong, S. K. Au, K. C. Lam, and Chun An Tang. "A Numerical Study of Pillar Failure Based on a Cusp-Type Catastrophe Model." Key Engineering Materials 297-300 (November 2005): 2628–35. http://dx.doi.org/10.4028/www.scientific.net/kem.297-300.2628.

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Based on cusp-type catastrophe theory, a sample rock-rock (hypocenter surrounding the rock) model for studying the pillar rockburst mechanism is presented in this paper. It is expounded theoretically that the stiffness ratio, K, of the roof and floor to the pillar plays an important role in the outbreak of instability. Using a newly developed numerical code, RFPA2D, the progressive failure process and associated microseismic behavior of the twin rock samples are simulated. The numerically simulated results also confirm that a soft roof and floor promotes an unstable failure or collapse of pill

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Fournier, David A., and A. R. Warburton. "Evaluating Fisheries Management Models by Simulated Adaptive Control — Introducing the Composite Model." Canadian Journal of Fisheries and Aquatic Sciences 46, no. 6 (1989): 1002–12. http://dx.doi.org/10.1139/f89-130.

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This paper uses the technique of simulated adaptive control to provide a method for comparing the performance of different fisheries management models. The management model is evaluated not in isolation, but rather as part of an integrated fisheries management system which includes the simulated population dynamics of the exploited fish, the simulated fishery, the fishery management policy formulation process, and the analysis of the simulated fisheries data. The technique is used to compare a simple biomass dynamic based model introduced by Ludwig and Hilborn with a more complicated length-ba

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A. Al-Hattab, Tahseen, and Sata K. Ajjam. "NONISOTHERMAL SIMULATION OF ELECTRODEPOSITION." IRAQI JOURNAL FOR MECHANICAL AND MATERIALS ENGINEERING 22, no. 1 (2022): 68–84. http://dx.doi.org/10.32852/iqjfmme.v22i1.586.

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The simulation of electrochemical deposition is developed by using a non-isothermal model. The model consists of two parts; the first is a continuum part that simulates the transport of heat and mass and the voltage distributions, and the second is a stochastic noncontinuum part that simulates the bulk diffusion, surface diffusion, and adsorption of the particles. The finite element method is used to solve the differential-algebraic governing equations of the continuum part whereas the Kinetic Monte Carlo method is used to simulate the particle actions in the non-continuum part. The model is a

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Zhang, Xiaoxi, Can Cao, Nan Gui, et al. "A Particle-Scale Model of Surface Tension for Two-Phase Flow: Model Description and Validation." Energies 15, no. 19 (2022): 7132. http://dx.doi.org/10.3390/en15197132.

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A particle-scale surface tension force model (STF) is proposed here to be incorporated in the smoothed hydrodynamics particle (SPH) method. This model is based on the identification of interface geometry and the gradient of densities across the interface. A square bubble of single-phase and a square bubble immersed in fluids are simulated by the STF model accompanied with a combined kernel in SPH to validate their suitability to simulate the immersed bubble motion. Two cases of rising bubbles, i.e., a single rising bubble and a pair of rising bubbles, are simulated for demonstration. The risin

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Wu, Jun, and Zhangcan Huang. "A stable cellular automaton model for composite materials with defects." Industrial Lubrication and Tribology 70, no. 7 (2018): 1320–25. http://dx.doi.org/10.1108/ilt-03-2018-0087.

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Purpose As the internal defects (pore defect) of materials formed during the preparation of the composite material have important effects on wear process, the model has been improved to simulate it. Design/methodology/approach Materials with defects were simulated by an improved cellular automaton model which show changes in three-dimensional topography, temperature of surface and coefficient of friction (COF) during wear process. Findings It is found that defects increase temperature of material surface. Besides, the materials with little defects have a smaller COF than base materials, as the

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Pang, Gui Bin, Yan Li, Zheng He Xu, and Huan Zhi Gao. "Calibration and Evaluation of ORYZA2000 under Water and Nitrogen Managements." Applied Mechanics and Materials 641-642 (September 2014): 246–50. http://dx.doi.org/10.4028/www.scientific.net/amm.641-642.246.

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Rice growth model of ORYZA2000 was introduced, we used field datas to verify the parameters. The aim is to check the adaptability of model, when it is applied to simulate dry matter, leaf area and yield under water and nitrogen managements. The results showed that, the model can simulate dry matter accumulation preferable, in which the observed dry matter of aboveground, leaf and sheath fit well with simulated results. But the simulated yield is higher then observed, may be the reason due to the rice lodging at later stages. While the simulated leaf area is lower than observed, the reason is t

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Shi, Bi Qing, Shuai Liu, and Zhuang Ning Xie. "Wind Flow Simulation of Scale Model of TTU Test Building." Applied Mechanics and Materials 71-78 (July 2011): 4000–4004. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.4000.

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A study of approach wind flow simulation of the low-rise building was performed in a boundary layer wind tunnel at Shantou University. Three kinds of experimental configuration are employed to simulate the suburban terrain. The characteristics of three types of simulated flow are presented. The wind tunnel testing of low-rise building, 1 : 30 geometrical scale model of the Texas Tech University test building was performed in the simulated flow. The model and full-scale pressure coefficients are presented for high-turbulence boundary layer flow. The comparison of the scale model and full-scale

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Hai, Duong Ngoc, and Nguyen The Duc. "A three dimensional non-hydrostatic model for turbulent air flow." Vietnam Journal of Mechanics 22, no. 3 (2000): 167–80. http://dx.doi.org/10.15625/0866-7136/9973.

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A finite-volume code is developed to compute the turbulent airflow over small- scale complex terrain. A pressure-correction algorithm is used to solve the three-dimensional non-hydrostatic flow equations. The turbulent transport is simulated by the k- € model using some modifications suitable for atmospheric boundary-layer application. As an example, the model is used to simulate the flow-field around a cubical building. The same flow as a towing-tank experiment of USEPA was simulated using our code. These simulations show that, the model was capable of simulating recirculation zones behind th

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Wu, Z., Y. Mao, G. Lu, and J. Zhang. "Simulation of soil moisture for typical plain region using the Variable Infiltration Capacity model." Proceedings of the International Association of Hydrological Sciences 368 (May 6, 2015): 215–20. http://dx.doi.org/10.5194/piahs-368-215-2015.

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Abstract. Droughts have a severe impact on the development of the social economy in developed plain areas. Soil moisture is a good index, it can reasonably reflect changes in drought. In this study, Jiangsu province in the Yangtze River Plain was selected as the research region, and the VIC (Variable Infiltration Capacity) large-scale hydrological model was selected to simulate the daily soil moisture with a resolution of 0.125 × 0.125 degree from 1956 to 2009. The simulated soil moisture was verified by measured soil moisture. The results indicate that the simulated soil moisture distribution

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