Sanal Flow Choking: A Paradigm Shift in Computational Fluid Dynamics Code Verification and Diagnosing Detonation and Hemorrhage in Real‐World Fluid‐Flow Systems

Global Challenges

Pradeep Kumar Radhakrishnan¹  Roshan Vignesh Baskaran²  Sulthan Ariff Rahman Mohamed Rafic²  Ajith Sukumaran²  Charlie Oommen³  Rajaghatta Sundararam Bharath³  Nichith Chandrasekaran³  Vigneshwaran Sankar⁴  Shiv Kumar Choudhary⁵  Valsalayam Raghavapanicker Sanal Kumar⁶ 

[1] Chief Division of Cardiothoracic and Vascular Surgery GITAM University Visakhapatnam Andhra Pradesh 530045 India;Department of Aeronautical Engineering Kumaraguru College of Technology Coimbatore Tamil Nadu 641049 India;Department of Aerospace Engineering Indian Institute of Science Bangalore Karnataka 560012 India;Department of Aerospace Engineering Indian Institute of Technology Kanpur Uttar Pradesh 208016 India;Department of Cardiothoracic and Vascular Surgery All India Institute of Medical Sciences New Delhi Delhi 110029 India;Vikram Sarabhai Space Center (SC CA No.6301/2013) Indian Space Research Organisation Veli ‐ Perumathura Rd, Kochuveli Thiruvananthapuram Kerala 695022 India;

关键词: chemical rocket design;    code verification;    fluid flows;    heart attacks;   

DOI  :  10.1002/gch2.202000012

来源: DOAJ

【 摘 要 】

Abstract The discovery of Sanal flow choking is a scientific breakthrough and a paradigm shift in the diagnostics of the detonation/hemorrhage in real‐world fluid flow systems. The closed‐form analytical models capable of predicting the boundary‐layer blockage factor for both 2D and 3D cases at the Sanal flow choking for adiabatic and diabatic fluid flow conditions are critically reviewed here. The beauty and novelty of these models stem from the veracity that at the Sanal flow choking condition for diabatic flows all the conservation laws of nature are satisfied at a unique location, which allows for computational fluid dynamics (CFD) code verification. At the Sanal flow choking condition both the thermal choking and the wall‐friction‐induced flow choking occur at a single sonic fluid throat location. The blockage factor predicted at the Sanal flow choking condition can be taken as an infallible data for various in silico model verification, validation, and calibration. The 3D blockage factor at the Sanal flow choking is found to be 45.12% lower than the 2D case of a wall‐bounded diabatic fluid flow system with air as the working fluid. The physical insight of Sanal flow choking presented in this review article sheds light on finding solutions, through in silico experiments in base flow and nanoflows, for numerous unresolved problems carried forward over the centuries in physical, chemical, and biological sciences for humankind.

【 授权许可】

Unknown