Effect of Expansion Taper Angle on Velocity and Temperature Distribution of Laval Nozzle | |
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( Volume 1 Issue 3,September 2015 ) OPEN ACCESS | |
Author(s): | |
Lan Zhang | |
Abstract: | |
With the development of gas industry, the production safety and production efficiency of natural gas is crucial, Laval nozzle is the core component of natural gas supersonic dehydration technology, and the study of its structure is helpful to improve the efficiency of dehydration. Based on the finite volume method, the numerical calculation model of Laval nozzle is established, and its flow field is analyzed by the Fluent. Then, the taper angle is changed to analyze the velocity and temperature of Laval nozzle. The results show that the flow field conforms to the characteristics of Laval nozzle, the outlet velocity decreases with taper angle increases, and the maximum velocity increases with taper angle increases. The outlet temperature increases with taper angle increases and the minimum temperature decreases with taper angle increases. With the increasing of expansion taper angle, the velocity field and the temperature field are compressed to the laryngeal and the shock wave closes to the laryngeal gradually. Those results can provide a reference for the choice of Laval nozzle. |
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