Theoretical Study and CFD Simulation of Airflow Distribution through a Cold Store

Abstract:

Recently, the quantity of the cold store has been increased quickly. It is a key point to improve the uniformity of airflow field to the cold store. In this paper, a model of simulating cold store by computational fluid dynamics (CFD) was introduced. Simple algorithm combined with Boussineq assumption was used and turbulent equation combined with standard wall function was applied to define the flow of air in the cold store. Both the structured mesh and unstructured mesh to cold store model were simulated. The simulation methods of airflow in a cold store between three-dimension (3D) technology and two-dimension (2D) technology were also discussed. The experiment was validated and proved that unstructured grid was in better agreement with the result of experiments and it was gotten that the three-dimension (3D) technology had a higher accuracy in simulation of airflow distribution. The airflow distribution in the vertical plane and horizontal plane in cold store were gotten, respectively.

• Periodical: Applied Mechanics and Materials (Volumes 170-173)
• Pages: 3543-3549
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.170-173.3543
• Online since: May 2012
• Authors: Yi Tang, Jing Xie, Chen Miao, Jin Feng Wang, Yi Zheng
• Keywords: Airflow Distribution, Cold Store, Computational Fluid Dynamics (CFD), Simulation

References

[1] Xie J, Qu X H, Xu S Q. Numerical Simulation and Verification of Airflow in Cold-Store[J]. Transactions of the Chinese Society of Agricultural Engineering, 2005, 21 (2): 11~16．

[2] Foster A M, Swain M J, Barrett R, D'Agaro P, Ketteringham L P, James S J. Three-dimensional effects of an air curtain used to restrict cold room infiltration[J]. Applied Mathematical Modeling , 2007, 31 (6): 1109~1123.

DOI: 10.1016/j.apm.2006.04.005

[3] Chourasia M K, Goswami T K. Steady state CFD modeling of airflow, heat transfer and moisture loss in a commercial potato cold store[J]. International Journal of Refrigeration, 2007, 30 (4): 672~689

DOI: 10.1016/j.ijrefrig.2006.10.002

[4] Delele M A , Schenk A, Tijskens E, Ramon H, Nicolaï B M, Verboven P. Optimization of the humidification of cold stores by pressurized water atomizers based on a multi scale CFD model[J]. Journal of Food Engineering, 2009, 91 (2): 228~239.

DOI: 10.1016/j.jfoodeng.2008.08.027

[5] Xie J, Wu T. Numerical simulation on temperature field in the doorway of a mini type cold store[J]. Journal of Shanghai Fisheries University, 2006, 15 (3): 333~339.

[6] Liu Yanling, Zhang Yan, Wang Shiqing, et al. Study on fluid fields distribution of arrangement methods of fruits and vegetables in cold store. Journal of Qingdao Agricultural University (Natural Science), 2008, 25 (1): 24~27.

[7] Foster A M, Swain M J, Barrett R, James S J. Experimental verification of analytical and CFD predictions of infiltration through cold store entrances[J]. International Journal of Refrigeration，2003, 26 (8): 918~925.

DOI: 10.1016/s0140-7007(03)00097-5

[8] Yang L, Wang X C. Numerical simulation on temperature filed of a mini type cold store[J]. Journal of Northwest A&F University (Nat. Sci. Ed.), 2008, 36 (9): 219~223.

[9] Meng Y Y, Nan S H. Numerical simulation of infiltration of cold capacity at cold-storage door under thermal pressure[J]. Building Energy & Environment (in Chinese), 2007, 26 (2): 40~41．

[10] Nahor H B, Hoang M L, Verboven P, Baelmans M, Nicolai B M. CFD model of the airflow, heat and mass transfer in cool stores[J]. International Journal of Refrigeration, 2005, 28 (3): 368~380.

DOI: 10.1016/j.ijrefrig.2004.08.014

[11] Hoang M L, Verboven P, De Baerdemaeker J, Nicolai B M. Analysis of the airflow in a cold store by means of computational fluid dynamics[J]. International Journal of Refrigeration, 2000, 23 (2): 127~140.

DOI: 10.1016/s0140-7007(99)00043-2