Numerical Simulations of Supersonic Flow Over an Elliptic Section Projectile with Jet Interaction PDF Download
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Author: Jubaraj Sahu
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Jubaraj Sahu
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
Computational fluid dynamics (CFD) approaches were used to compute the supersonic flow fields and aerodynamic forces and moments on an elliptic projectile with jet interaction. Steady state numerical results have been obtained for the jet interaction problem at a supersonic Mach number, Mach = 4.0, and several angles of attack from 0 deg to 12 deg via Navier-Stokes computational techniques. The jet modeled in this problem is a supersonic helium jet exhausted into the free stream flow at a high pressure. Computed CFD results show the qualitative features and strong flow interaction between the jet and the free-stream flow. In general, very good agreement of the computed aerodynamic coefficients with the experimental data was achieved for all angles of attack investigated for the "jet-on" conditions. The results show the predictive capabilities of CFD techniques for supersonic flow over elliptic projectiles with jet interaction.
Author: Jabaraj Sahu
Publisher:
ISBN:
Category : Projectiles, Aerial
Languages : en
Pages : 18
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Author:
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ISBN:
Category :
Languages : en
Pages : 0
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Computational fluid dynamics (CFD) approaches were used to compute the supersonic and hypersonic flow fields and aerodynamic forces and moments on elliptical projectiles. Steady state numerical results have been obtained at several supersonic Mach numbers between 2.5 and 4.0 and several angles of attack from 0 to 12 degrees for the 'jet-off' conditions with the use of Euler and Navier-Stokes flow solvers. In addition, numerical computations have been performed for the 'jet-on' conditions to study the interaction of a helium jet with a free stream Mach 4.0 flow. In general, very good agreement of the computed aerodynamic coefficients with the experimental data was achieved at all speeds and angles of attack investigated for jet-off conditions. A small discrepancy exists in the comparisons for the axial force. CFD results for the jet-on case show the qualitative features and strong flow interaction between the jet and the free stream flow. The results show the predictive capabilities of CFD techniques for supersonic flow over elliptical projectiles.
Author:
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Category :
Languages : en
Pages :
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Author: Daniel L. McMaster
Publisher:
ISBN:
Category :
Languages : en
Pages : 50
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Numerical simulations were performed for a supersonic jet issuing from a blunt-nosed ogive cylinder into a Mach 12 cross stream. All calculations employed the finite differenced, mass-averaged Navier Stokes equations with an algebraic eddy viscosity model for turbulence closure. One portion of the present investigation was focused on the numerical resolution requirement for the three-dimensional separated flow field around the non-rotating body. For this purpose, four solutions were obtained using mesh systems with different numbers of grid points and clustering. The secondary separated flow field structure was resolved with moderately increased grid density. The major portion of the present study was devoted to the simulation of the flow field around the identical configuration with the added complexity of rotating motion about the principal axis of the body. Numerical solutions over a wide range of angular velocities were obtained in the rotating frame of reference. The effects of rotation on the global flow field structure and especially the jet plume formation were examined through a comparative study from the viewpoint of a stationary observer. At the low angular velocity of interest, the effects of body rotation on the flow field structure were significant.
Author:
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ISBN:
Category :
Languages : en
Pages : 14
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Author: Favian C. Dixon
Publisher:
ISBN:
Category :
Languages : en
Pages : 176
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Author: Adriana Nastase
Publisher: Elsevier
ISBN: 008055699X
Category : Technology & Engineering
Languages : en
Pages : 425
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Book Description
Computation of Supersonic Flow over Flying Configurations is a high-level aerospace reference book that will be useful for undergraduate and graduate students of engineering, applied mathematics and physics. The author provides solutions for three-dimensional compressible Navier-Stokes layer subsonic and supersonic flows. - Computational work and experimental results show the real-world application of computational results - Easy computation and visualization of inviscid and viscous aerodynamic characteristics of flying configurations - Includes a fully optimized and integrated design for a proposed supersonic transport aircraft
Author: Johns Hopkins University. Applied Physics Laboratory
Publisher:
ISBN:
Category : Aerodynamics, Supersonic
Languages : en
Pages : 372
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