Study on Parameter Optimization of Centrifugal and Continuous Dewatering of Tea Leaves Based on Numerical Simulation of Multiphase Flow

ZHU Zhinan; ZHAO Zhangfeng; ZHONG Jiang; ZHOU Rengui; ZHANG Xian

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Journal of Tea Science ›› 2017, Vol. 37 ›› Issue (3) : 280-289.

Study on Parameter Optimization of Centrifugal and Continuous Dewatering of Tea Leaves Based on Numerical Simulation of Multiphase Flow

ZHU Zhinan¹, ZHAO Zhangfeng^1,*, ZHONG Jiang¹, ZHOU Rengui², ZHANG Xian¹

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Abstract

In order to improve the dewatering rate and achieve continuous dewatering, a concept of increasing the dispersion of tea leaves through venting, and using the multiphase flow coupling technology of discrete field - flow field was introduced based on the centrifugal dewatering principle. The centrifugal dewatering process of fresh tea leaves was numerically simulated and verified by experiments to determine the factors affecting the dewatering rate. It was found that the difference of rotational speeds between centrifugal barrel and spiral body had the greatest influence on the dewatering effect in the case that the direction of blowing air was outward from the centrifugal barrel. The centrifugal speed ranked the second on the dewatering effect. The speed of wind had the least effect on the dewatering effect.

Key words

air duct / centrifugal dewatering / multiphase flow coupling / tea

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ZHU Zhinan, ZHAO Zhangfeng, ZHONG Jiang, ZHOU Rengui, ZHANG Xian. Study on Parameter Optimization of Centrifugal and Continuous Dewatering of Tea Leaves Based on Numerical Simulation of Multiphase Flow[J]. Journal of Tea Science. 2017, 37(3): 280-289

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