The flow and heat transfer characteristics of impinging laminar jets issuing from rectangular slots of different aspect ratios have been investigated numerically through the solution of three-dimensional Navier-Stokes and energy equations in steady state. The three-dimensional simulation reveals the existence of pronounced streamwise velocity off-center peaks near the impingement plate. Furthermore, the effect of these off-center velocity peaks on the Nusselt number distribution is also investigated. Interesting three-dimensional flow structures are detected which cannot be predicted by two-dimensional simulations.
Issue Section:
Jets, Wakes, and Impingement
1.
Al-Sanea
S.
1992
, “A Numerical Study of the Flow and Heat Transfer Characteristics of an Impinging Laminar Slot-jet Including Crossflow Effects
,” Int. J. Heat Mass Transfer
, Vol. 35
, pp. 2501
–2513
.2.
Chou
Y. J.
Hung
Y. H.
1994
, “Impingement Cooling of an Isothermally Heated Surface with a Confined Slot Jet
,” ASME JOURNAL OF HEAT TRANSFER
, Vol. 116
, pp. 479
–482
.3.
Gardon
R.
Akfirat
J. C.
1966
, “Heat Transfer Characteristics of Impinging Two-Dimensional Air Jets
,” ASME JOURNAL OF HEAT TRANSFER
, Vol. 88
, pp. 101
–108
.4.
Garg
V. K.
Jayaraj
S.
1988
, “Boundary Layer Analysis for Two-Dimensional Slot Jet Impingement on Inclined Plates
,” ASME JOURNAL OF HEAT TRANSFER
, Vol. 110
, pp. 577
–582
.5.
Gosman, D., Pun, W. M., Runchal, A. K., Spalding, D. B., and Wolfshtein, M., 1969, Heat and Mass Transfer in Recirculating flows, Academic Press, London.
6.
Heiningen
A. R. P. V.
Majumdar
A. S.
Douglas
W. J. M.
1976
, “Numerical Prediction of the Flow Field and Impinging Heat Transfer Caused by a Laminar Slot Jet
,” ASME JOURNAL OF HEAT TRANSFER
, Vol. 98
, pp. 654
–658
.7.
Hoffmann, K. A., and Chiang, S. T., 1995, Computational Fluid Dynamics for Engineers, Vol. 1, Engineering Education System Publications, Wichita, KS.
8.
Leonard
B. P.
1979
, “A Stable and Accurate Convective Modelling Procedure Based on Quadratic Upstream Interpolation
,” Comput. Methods Appl. Mech. Engng.
, Vol. 19
, pp. 59
–98
.9.
Leonard
B. P.
Mokhtari
S.
1990
, “Beyond First Order Upwinding: The ULTRA-SHARP Alternative for Nonoscillatory Steady-State Simulation of Convection
,” Int. J. Numer. Methods Eng.
, Vol. 30
, pp. 729
–766
.10.
Leonard
B. P.
Drummond
J. E.
1995
, “Why You Should Not Use ’Hybrid,’ ’Power Law’ or Related Exponential Schemes for Convective Modelling—There are Much Better Alternatives
,” Int. J. Numer. Meth. Fluids
, Vol. 20
, pp. 421
–442
.11.
Lin
Z. H.
Chou
Y. J.
Hung
Y. H.
1997
, “Heat Transfer Behaviors of a Confined Slot Jet Impingement
,” Int. J. Heat Mass Transfer
, Vol. 40
, pp. 1095
–1107
.12.
Masters
G. F.
1981
, “Spanwise Velocity Distributions in Jets from Rectangular Slots
,” AIAA J.
, Vol. 19
, pp. 148
–152
.13.
Mikhail, S., Moreos, S. M., Abou-Ellail, M. M. M., and Ghaly, W. S., 1982, “Numerical Prediction of Flow Field and Heat Transfer from a Row of Laminar Slot Jets Impinging on a Flat Plate,” Proc. 7th Int. Heat Transfer Conf., Vol. 3, pp. 377–382.
14.
Miyazaki
H.
Silberman
E.
1972
, “Flow and Heat Transfer on a Flat Plate Normal to a Two-dimensional Laminar Jet Issuing from a Nozzle of Finite Height
,” Int. J. Heat Mass Transfer
, Vol. 15
, pp. 2097
–2107
.15.
Patankar, S. V., 1980, Numerical Heat Transfer and Fluid Flow, Hemisphere, New York.
16.
Potthast
F.
Laschefski
H.
Mitra
N. K.
1994
, “Numerical Investigation of Flow Structure and Mixed Convection Heat Transfer of Impinging Radial and Axial Jets
,” Numer. Heat Transfer
, Part A, Vol. 26
, pp. 123
–140
.17.
Quinn
W. R.
1991
, “Passive Near-Field Mixing Enhancement in Rectangular Jet Flows
,” AIAA J.
, Vol. 29
, pp. 515
–519
.18.
Quinn
W. R.
Millitzer
J.
1988
, “Experimental and Numerical Study of a Turbulent Free Square Jet
,” Physics of Fluids
, Vol. 31
, pp. 1017
–1025
.19.
Rockwell
D. O.
1977
, “Vortex Stretching Due to Shear Layer Instability
,” J. Fluids Eng.
, Vol. 99
, pp. 240
–244
.20.
Saad, Y., 1996, Iterative Methods for Sparse Linear Systems, PSW Publ. Co., Boston.
21.
Schafer
D. M.
Incropera
F. P.
Ramadhyani
S.
1992
, “Numerical Simulation of Laminar Convection Heat Transfer from an In-line Array of Disscrete Sources to a Confined Rectangular Jet
,” Numer. Heat Transfer, Part A
, Vol. 22
, pp. 121
–141
.22.
Sfeir
A.
1979
, “Investigation of Three-Dimensional Turbulent Rectangular Jets
,” AIAA J.
, Vol. 17
, pp. 1055
–1060
.23.
Tsuchiya
Y.
Horikoshi
C.
Sato
T.
1986
, “On the Spread of Rectangular Jets
,” Exp. Fluids
, Vol. 4
, pp. 1197
–204
.24.
Van der Vorst
H. A. V.
1989
, “BiCGSTAB: A Fast and Smoothly Converging Variant of Bi-CG for the Solution of Non-Symmetric Linear Systems
,” SIAM J. Sci. Statist. Comput.
, Vol. 10
, pp. 1174
–1185
.25.
Wadsworth
D. C.
Mudawar
I.
1990
, “Cooling of a Multichip Electronic Module by Means of Confined Two-Dimensional Jets of Liquids
,” ASME JOURNAL OF HEAT TRANSFER
, Vol. 112
, pp. 891
–898
.26.
Yuan
T. D.
Liburdy
J. A.
Wang
T.
1988
, “Buoyancy Effects on Laminar Impinging Jets
,” Int. J. Heat Mass Transfer
, Vol. 31
, pp. 2137
–2145
.
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