Analysis of the Fluid Diffusion Characteristics in Platelet Pre-Mixer

Abstract:

Platelet mixer is a type of high-efficient equipment which can mix fluids through platelet micro-channels by cross-bedded injection. It overcomes disadvantages that the fluid is centralized around the inlet and it improves the diffusion. In this work, the platelet mixer is used for pre-mixer in a rocket engine, and the diffusion of oxygen and air in pre-mixer is analyzed. The high speed jet leads to a strong shear force near the inlet which produces counter-rotating stream-wise vortices around the jet. The angle between the direction of jet and radial direction influences both the stream-wise vortices and diffusion. The vortices intensity increases as the angle increase from 0^o to 20^o.

• Periodical: Defect and Diffusion Forum (Volume 370)
• Pages: 98-102
• DOI: https://doi.org/10.4028/www.scientific.net/DDF.370.98
• Online since: January 2017
• Authors: Bin Xian Shen, Wei Qiang Liu
• Keywords: Diffusion, Mixing Uniformity, Platelet, Pre-Mixer

References

[1] Frank L, Mamn D. AIAA Inc, (2002).

[2] Holdeman J D, Clisset J R, Moder J P. Journal of Engineering for Gas Turbines and Power, 2010, 132: 064502.

[3] Luo P, Cheng Y, Zhao Y, et al. Chemical Engineering Science, 2007, 62: 5688-5695.

[4] Rahimi M, Parvareh A. Chemical Engineering Journal, 2005, 115: 85-92.

[5] Nuo P C. CIESC Journal, 2014, Vol. 65 No. 7: 2733-2740.

[6] Liu WQ, Zhang F, Zhang BY, et al. China, Palent : 200410046605. 0. (2005).

[7] Xiao YG, Sun WS, Liu WQ. Modern Chemical Industry. 2005: 25.