Numerical simulation of water cycling and heat balance in agricultural ecosystems

1992 ◽  
Vol 8 (2) ◽  
pp. 108-116
Author(s):  
Yao Deliang ◽  
Shen Weiming ◽  
Li Jiachun
Keyword(s):  
Numerical Simulation ◽  
Heat Balance ◽  
Agricultural Ecosystems ◽  
Water Cycling

Numerical Simulation of Thermal and Fluid-Dynamic Behaviour of Reciprocating Compressor

2000 ◽  
Author(s):  
Zhilong He ◽  
Xueyuan Peng ◽  
Pengcheng Shu
Keyword(s):  
Numerical Simulation ◽  
Fluid Flow ◽  
Heat Balance ◽  
Dynamic Behaviour ◽  
Fluid Dynamic ◽  
Reciprocating Compressor ◽  
One Dimensional ◽  
Compressor Design ◽  
Suction Line ◽  
Hermetic Compressor

Abstract This paper presents a numerical method for simulating the thermal and fluid-dynamic behavior of hermetic compressors in the whole compressor domain. The model of fluid flow is developed by integrating transient one-dimensional conservation equations of continuity, momentum and energy through all of the elements from suction line to discharge line. The model describing thermal behavior is based on heat balance in the components such as muffler, connecting tubes and orifices. The calculation of the thermodynamic and transport properties for different refrigerants at various conditions has been considered, and some numerical results for a hermetic compressor are presented. The present study has demonstrated that the numerical simulation is a fest and reliable tool for compressor design.

Electric Heating Biogas Digester Experimental Research and Numerical Simulation of Fluent

2013 ◽  
Vol 724-725 ◽  
pp. 236-240
Author(s):  
Ling Jia ◽  
Shi Lu Xing ◽  
Rui Tian ◽  
Li Ying Wang ◽  
Song Li
Keyword(s):  
Heat Transfer ◽  
Numerical Simulation ◽  
Heat Balance ◽  
Simulation Analysis ◽  
Electric Heating ◽  
Accurate Method ◽  
Dynamic Boundary Conditions ◽  
Experimental Conditions ◽  
Simulation Process ◽  
Good Agreement

In order to verify the correspondence of numerical simulation and experimental results in the electric heating biogas digester system, an electric heating biogas digester experimentdevice was established, and according to the experimental conditions, software Fluent was used to simulate the process of the heat transfer in the system. Before simulation, analyze theexperimental data through the calculation of heat balance and modify it, then use the modifiedexperimental data, compile UDF to characterize the dynamic boundary conditions, choosestandard turbulence model through the Raleigh number, numerical solving the process. Numericalsimulation results show: simulation process basically reflects the experiment, the simulation dataand experimental data are good agreement, and error within 1%. It is concluded that thenumerical simulation analysis is accurate, method is reliable.

Water uptake by substituted amylose tablets: experimentation and numerical simulation

2009 ◽  
Vol 00 (00) ◽  
pp. 090904073309027-8
Author(s):  
H.W. Wang ◽  
S. Kyriacos ◽  
L. Cartilier
Keyword(s):  
Numerical Simulation ◽  
Water Uptake
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