scholarly journals Conditional turbulence in the reciprocating flow in a bifurcating pipe

2020 ◽  
Author(s):  
Chinthaka Jacob ◽  
David Tingay ◽  
Justin Leontini
Keyword(s):  
Reciprocating Flow

Application of short bed reciprocating flow ion exchange to copper/zinc separation from concentrated leach solutions

1992 ◽  
Vol 30 (1-3) ◽  
pp. 431-444 ◽  
Author(s):  
A.F. Chinn ◽  
R.T. McAndrew ◽  
R.L. Hummel ◽  
J.E. Mouland
Keyword(s):  
Ion Exchange ◽  
Copper Zinc ◽  
Reciprocating Flow

Oscillatory Heat Transfer in a Pipe Subjected to a Laminar Reciprocating Flow

1996 ◽  
Vol 118 (3) ◽  
pp. 592-597 ◽  
Author(s):  
T. S. Zhao ◽  
P. Cheng
Keyword(s):  
Heat Transfer ◽  
Experimental Data ◽  
Heat Flux ◽  
Nusselt Number ◽  
Numerical Study ◽  
Temperature Cycle ◽  
Uniform Heat Flux ◽  
Fluid Temperature ◽  
Cycle Space ◽  
Reciprocating Flow

An experimental and numerical study has been carried out for laminar forced convection in a long pipe heated by uniform heat flux and subjected to a reciprocating flow of air. Transient fluid temperature variations in the two mixing chambers connected to both ends of the heated section were measured. These measurements were used as the thermal boundary conditions for the numerical simulation of the hydrodynamically and thermally developing reciprocating flow in the heated pipe. The coupled governing equations for time-dependent convective heat transfer in the fluid flow and conduction in the wall of the heated tube were solved numerically. The numerical results for time-resolved centerline fuid temperature, cycle-averaged wall temperature, and the space-cycle averaged Nusselt number are shown to be in good agreement with the experimental data. Based on the experimental data, a correlation equation is obtained for the cycle-space averaged Nusselt number in terms of appropriate dimensionless parameters for a laminar reciprocating flow of air in a long pipe with constant heat flux.

scholarly journals Hysteretic characteristics of biplane wells turbine in reciprocating flow.

1988 ◽  
Vol 8 (30) ◽  
pp. 349-352
Author(s):  
Toshiaki SETOGUCHI ◽  
Kenji KANEKO ◽  
Hiromitsu HAMAKAWA ◽  
Masahiro INOUE
Keyword(s):  
Wells Turbine ◽  
Hysteretic Characteristics ◽  
Reciprocating Flow

scholarly journals Numerical Simulation of Reciprocating Flow Forced Convection in Two-Dimensional Channels

2003 ◽  
Vol 125 (3) ◽  
pp. 403-412 ◽  
Author(s):  
Cuneyt Sert ◽  
Ali Beskok
Keyword(s):  
Boundary Conditions ◽  
Forced Convection ◽  
Temperature Fields ◽  
Bottom Surface ◽  
Bulk Temperature ◽  
Element Formulation ◽  
Two Dimensional ◽  
Penetration Length ◽  
Time Accuracy ◽  
Reciprocating Flow

Numerical simulations of laminar, forced convection heat transfer for reciprocating, two-dimensional channel flows are performed as a function of the penetration length, Womersley (α) and Prandtl (Pr) numbers. The numerical algorithm is based on a spectral element formulation, which enables high-order spatial resolution with exponential decay of discretization errors, and second-order time-accuracy. Uniform heat flux and constant temperature boundary conditions are imposed on certain regions of the top surface, while the bottom surface is kept insulated. Periodicity of velocity and temperature fields is imposed on the side boundaries, while the flow is driven by an oscillating pressure gradient. These sets of boundary conditions enable time-periodic solution of the problem. Instantaneous and time-averaged surface and bulk temperature distributions, and Nusselt number variations are presented. For high α flows, the temperature field is significantly affected by the Richardson’s annular effect. Overall, forced convection increases by increasing the penetration length, α and Pr. Corresponding steady-flow simulations are performed by matching the volumetric flowrate. For the limited parameter space investigated in this paper, steady unidirectional forced convection is more effective than the reciprocating flow forced convection.

Experimental and numerical investigation on performance of a porous medium burner with reciprocating flow

Fuel ◽  
2009 ◽  
Vol 88 (1) ◽  
pp. 206-213 ◽  
Author(s):  
Mao-Zhao Xie ◽  
Jun-Rui Shi ◽  
Yang-Bo Deng ◽  
Hong Liu ◽  
Lei Zhou ◽  
...  
Keyword(s):  
Porous Medium ◽  
Numerical Investigation ◽  
Reciprocating Flow
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