运用数值模拟手段实现了额定状态、最大状态和全加力状态下某室内发动机试车台推力的气动校准,并初步验证了计算准确性。结果表明:数值计算较好地模拟了室内发动机试车台内气流的流动情况,各部分修正阻力在变化趋势和数值范围上合理可信;大流量状态下进气冲量对推力校准的影响最为显著,喷口阻力和进气道附加阻力也有一定的影响。 The numerical simulation method is used to achieve the aerodynamic calibration of the thrust of a test chamber of an indoor engine under rated condition, maximum condition and full load condition, and the calculation accuracy is preliminarily verified. The results show that the numerical simulation better simulates the flow of indoor air in the test runner of the indoor engine, and the corrective resistance of each part is reasonable and credible in the changing trend and numerical range. The intake air impulse has the most significant influence on the thrust calibration under the condition of large flow, Nozzle port resistance and inlet resistance also have a certain impact.