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Title of Journal: J Cent South Univ

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Abbravation: Journal of Central South University

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Central South University

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DOI

10.1002/9781119364276.ch5

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2227-5223

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Numerical modeling airflow in soil with impact of

Authors: Xiaoyue Zhang Dong Wang Xiaole Zhang Xiaodong Chen
Publish Date: 2013/05/04
Volume: 20, Issue: 5, Pages: 1405-1411
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Abstract

In order to simulate the airflow in anhydrous case and the waterair flow in groundwater case a numerical model of airflow in soil was developed For the nonlinearity of the governing partial differential equation the corresponding discretization and linearization methods were given Due to the mass transfer between airphase and waterphase phase states of the model elements were constantly changing Thus parameters of the model were divided into primary ones and secondary ones and the primary variables changing with phase states and the secondary variables can be obtained by their functional relationship with the primary variables Additionally the special definite condition of this numerical model was illustrated Two examples were given to simulate the airflow in soil whether there was groundwater or not and the effectiveness of the numerical model is verified by comparing the results of simulation with that of experimentFoundation item ProjectY5080022 supported by the Natural Science Foundation of Zhejiang Province China ProjectRC1202 supported by Scientific and Technological Program of Water Resources Department of Zhejiang Province in 2012 China ProjectY201224384 supported by Scientific Research Program of Education Department of Zhejiang Province in 2012 China

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