Numerical Study of Pressure Field in Laterally Closed Industrial Buildings with Curved Metallic Roofs due to the Wind Effect by FEM and European Rule Comparison

This paper describes the use of a commercial CFD code, FLUENT, to model fluid flow in thermal flow reversal reactor (TFRR) for lean methane oxidation. A two dimensional model is used. Pressure loss in ceramic bed of TFRR was focused on, and the effects of main factors are presented. The results show that the contours of static pressure in ceramic bed are slightly inclined due to the gradually variation distribution of velocity; the pressure field in distributing header is more uniform than that of collecting header; the ratio of header’s height to ceramic length influences the pressure loss most and with the increase of the ratio the pressure loss of TFRR decreased dramatically; the pressure loss increased with the increase of volume flow rate. The structure of headers is the most important factor which affects the pressure loss of TFRR.

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Surface folding of viscoelastic fluids: finite elasticity membrane model

European Journal of Applied Mathematics ◽

10.1017/s0956792504005601 ◽

2004 ◽

Vol 15 (4) ◽

pp. 385-408 ◽

Cited By ~ 5

Author(s):

T. PODGORSKI ◽

A. BELMONTE

Keyword(s):

Reynolds Number ◽

Free Surface ◽

Pressure Field ◽

Numerical Study ◽

Finite Elasticity ◽

Viscoelastic Fluids ◽

Deborah Number ◽

Elastic Membrane ◽

Surface Wetting ◽

Qualitative Behaviour

When a dry sphere sinks into a fluid, a funnel-shaped free surface develops behind the sphere if the sinking occurs faster than the surface wetting. If the fluid is viscoelastic, the interface can become unstable to a loss of axisymmetry. The stress near this surface concentrates into boundary layers, as also seen in other free surface extensional flows of viscoelastic fluids. At high Deborah number and low Reynolds number, the qualitative behaviour can be recovered by considering the static equilibrium of a stretched elastic membrane in an hydrostatic pressure field. We treat this problem in the framework of finite elasticity using a neo-Hookean constitutive model, and show how the conditions of instability can be recovered. A numerical study of this model is presented.

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Experimental and numerical study of unsteady viscous flow due to rotor-stator interaction in turbines. I - Data, code, and pressure field

10.2514/6.1998-3595 ◽

1998 ◽

Cited By ~ 2

Author(s):

B. Lakshminarayana ◽

A. Chernobrovkin ◽

D. Ristic

Keyword(s):

Viscous Flow ◽

Pressure Field ◽

Numerical Study ◽

Rotor Stator Interaction ◽

Unsteady Viscous Flow

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A Numerical Study of the Turbulent Flow over a Cylinder close to Moving Plane

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.394.115 ◽

2013 ◽

Vol 394 ◽

pp. 115-120

Author(s):

Luciano Gonçalves Noleto ◽

Jhon Nero Vaz Goulart ◽

Manuel Nascimento Dias Barcelos Júnior ◽

Antonio C.P. Brasil Junior

Keyword(s):

Turbulent Flow ◽

Pressure Field ◽

Numerical Study ◽

Plane Boundary ◽

Projection Scheme ◽

Oscillatory Pattern ◽

Sst Model ◽

Moving Plane ◽

Recirculation Zones ◽

Lift And Drag

Two-dimensional numerical simulations are performed to analyze the turbulent flow over a circular cylinder close to a moving plane. This flow receives interference from the plane boundary layer, being this effect identified by recirculation zones close to the wall and slight difference in pressure distribution around cylinder. URANS equations and SST modeling are employed to calculate velocity and pressure field. The simulation was performed by a finite element projection scheme. Four distances between the cylinder and the plane are analyzed by the SST model. The SST results showed the generation and development of vortex shedding. Lift and drag coefficients show the flow oscillatory pattern. All results are similar with other numerical results at the literature.

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