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Số người truy cập: 51,132,736

 Computation and Testing Oblique Shock Over Wedge by Using OpenFoa
Tác giả hoặc Nhóm tác giả: Nguyen Hoai, Nguyen Le Van, Pham Thanh Phong
Nơi đăng: World Conference on Applied Sciences, Engineering & Technology, HCMUT, Vietnam.; Số: 5;Từ->đến trang: 98-104;Năm: 2016
Lĩnh vực: Kỹ thuật; Loại: Bài báo khoa học; Thể loại: Quốc tế
TÓM TẮT

ABSTRACT
For the calculating and simulation, it is well known that OpenFOAM has become a very popular tool for research work in different fields and particularly, in fluid dynamics. But, it is also known its lack of detailed documentation supporting solvers made using the set of libraries provided by OpenFOAM. Among the important technical applications about oblique shock wave, calculation and testing base on OpenFOAM becomes very precise and intuitive. By using one or a combination of oblique shock waves results in more favourable post-shock conditions (lower post-shock temperature, etc.) when compared to utilizing a single normal shock. In this paper, a computational study of wedge-induced oblique shock is presented with the purpose of understanding the fundamental gas dynamics of the waves and their interactions. At two- dimensional, time accurate, finite-volume-based method was used to perform the computations. The simulation was performed with wedges of up to 37◦ semi-angle, with other inflow parameters fixed. Within the computational domain of oblique shock waves were obtained depending on the flowMach number and the wedge semi-angle. The physical mechanisms of these phenomena were analysed. This is the basis for predicting the structure more dynamic flow of reality.
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