Experimental research of heat fluxes in wind tunnels and shock tubes
The article describes the methods and results of the study of heat transfer in the wind tunnel and shock tubes in the presence of shock waves in the flow. In the first case, the research was carried out using a thermal imager and infrared illuminators, which allowed to determine the patterns of heat transfer on the inner walls of the wind tunnel. The study was carried out for the Mach number 2.48 and the turbulent flow regime. The shock wave was initiated using a plane wedge mounted on the upper wall of the setup test sec-tion. A high-speed thermoelectric detector with a resolution of up to 1 microsecond was used to study heat fluxes in the shock tubes. The experiments were carried out on two diaphragm type shock tubes at the Mach number behind the shock wave of 15.
В статье приводится описание методик и результатов исследования теплообмена в аэродинамических установках непрерывного и кратковременного действия при наличии в потоке ударных волн. В первом случае исследования проводятся с ис-пользованием тепловизора и инфракрасных иллюминаторов, позволяющих опреде-лить закономерности теплообмена на внутренних стенках аэродинамической уста-новки непрерывного действия. Исследование проведено для числа Маха 2.48 и турбулентного режима течения. Ударная волна инициировалась с помощью плос-кого клина, установленного на верхней стенке рабочей части установки. Для ис-следования тепловых потоков в ударной трубе использовался быстродействующий термоэлектрический детектор разрешением до 1 мкс. Эксперименты проводились на двух ударных трубах диафрагменного типа при числе Маха за ударной волной 15.
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