Abstract
Numerical simulation about a three-dimensional inward turning inlet with isolator and combustor was performed to study the flow field structure and flow characteristics of shock train. Cold and hot model wind tunnel experiments were carried out to compare the effects of cold and hot condition on shock train characteristics. The result shows that no oscillation phenomenon of the shock train was observed in the cold model experiment, but oscillation back and forth occurred in the hot model experiment. The trend of pressure distributions are consistent in cold and hot condition before the combustor. But it changed in the combustor where the pressure presented a continuous rising trend in cold condition, while a trend of rising first and then descending in hot condition. Establishing the corresponding relationship between throttling ratio and gas-oil ratio is beneficial to predict the property of the isolator in hot condition according to the cold condition.
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