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Simulation and analysis on the flow field of the low temperature mini-type cold store

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Abstract

The understanding of the flow field inside the cold store is very important to food storage at low temperatures. In this paper, the CFD simulation on the flow field for low temperature cold store with air forced supply mode is presented. The turbulence flow of three-dimensional steady incompressible viscous fluid is analyzed using finite volume method and standard K-ε two-equation. The temperature and velocity fields of this cold store are simulated, analyzed and compared. The simulation results show that the velocity and temperature fields are evidently influenced by the cross section from the ground, and the optimal cross section is also given in this paper.

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Abbreviations

ρ:

Fluid density (kg/m3)

ϕ:

Variable item (such as velocity, temperature or concentration)

t :

Time (s)

v :

Velocity (m/s)

x i :

Directions in the right-angle coordinate system

Γ:

Pervasion coefficient

p eff :

Pressure (Pa)

u eff :

Dynamical viscosity (n.m/s2)

u, v, w:

Different velocity in three dimension coordinate system (m/s)

T :

Temperature (°C)

P r :

Prandtl’s number

q :

Inner heat source (W/m3)

c p :

Specific heat (J/(kg.C))

g :

Acceleration of gravity (m/s2)

σ T :

Constant, its value is 0.9 ~ 1

σ k :

Constant

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Authors and Affiliations

  1. Institute of Refrigeration and Cryogenics, Shanghai Jiao Tong University, 200240, Shanghai, China

    X. H. Hao & Y. L. Ju

Authors
  1. X. H. Hao
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  2. Y. L. Ju
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Correspondence to Y. L. Ju.

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Hao, X.H., Ju, Y.L. Simulation and analysis on the flow field of the low temperature mini-type cold store. Heat Mass Transfer 47, 771–775 (2011). https://doi.org/10.1007/s00231-011-0764-1

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  • DOI: https://doi.org/10.1007/s00231-011-0764-1

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