TY - JOUR ID - 144224 TI - Designing an Ultrasonic Wind Tunnel with a Steam Ejector System of Combined Cycle Power Plants JO - Journal of Aerospace Science and Technology JA - JAST LA - en SN - 1735-2134 AU - Shadmehr, Hossein AU - Ghasemloo, Sajad AU - Parhizkar, Hamid AD - Mapna Group AD - Assistant Professor, Malek Ashtar University of Technology AD - Assistant Professor, Malek Ashtar University, Tehran, Iran Y1 - 2022 PY - 2022 VL - 15 IS - 1 SP - 26 EP - 37 KW - Wind-tunnel KW - Combine Cycle Power Plant KW - Computational Fluid Dynamics DO - 10.22034/jast.2022.297517.1087 N2 - In this article, the idea of building a supersonic wind tunnel has been provided that uses a high-pressure steam flow of a combined cycle power plant. This has been investigated by CFD method. Using the plant's output steam as a high-pressure source can be used in the ejector to create supersonic airflow in the test chamber. For this purpose, first, the numerical model has been validated in comparison with the previous numerical and experimental results. The numerical model used is the viscous compressible flow, which is performed by the k-ω-SST turbulent modeling of the turbulence model. All calculations are performed in ANSYS-FLUENT software. After validating the numerical process, various geometries have been proposed to achieve the ultrasonic secondary flow and each structure is examined numerically separately in a range of functional conditions. Through trial and error method and looking at the achievements of previous research, in a very long process and by testing several different structures, a suitable structure has been obtained to achieve the supersonic testing chamber. This structure has been studied parametrically under different functional conditions. It has been shown that the proposed structure can generate an ultrasonic flow in an acceptable range of power plant steam flow and pressure. This structure has been proposed for the first time in the literature in this field, and in no previous research has such a structure been proposed. Access to the ultrasonic secondary flow is also a major innovation of this research. UR - https://jast.ias.ir/article_144224.html L1 - https://jast.ias.ir/article_144224_fed347a6a8e39eb00fcda828535235e2.pdf ER -