数値計算による熱音響流の解析(熱工学)

概要

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A new convection in micro-gravity was discovered that occurs when droplet burns off a node and an anti-node of standing sound waves experimentally. The convection is named "thermo-acoustic streaming". It has found that the thermo-acoustic streaming promotes a burning rate. The situations around the streaming are not investigated yet. Detailed distribution of velocity, temperature and density, particularly time resolved flow field, is difficult to know in experiments. If the numerical experiments are possible on the thermo-acoustic streaming, detailed data can be obtained easily. The numerical model has been created anew. We succeeded in reproducing the thermo-acoustic streaming by numerical simulation. The changes in the pressure distribution and the velocity distribution are the cause to generate the thermo-acoustic streaming. We have clarified the mechanism of the streaming and obtained detailed data beyond experimental restriction.
2004-03-03