本論文主要在探討多孔質中結合熱傳與質傳之非達西混合對流。研究的混合對流系統有兩種:一種是等溫度/等濃度壁的垂直板，另一種是等熱通量/等質通量壁的水平板。而研究的溫度差所引起的浮力效應以及濃度差所引起的浮力效應為同一方向，也就是具有加成效果的同向流。所分析的範圍包括低路易士數(0.3-3.0)和高路易士數(20-200)的流體。前者適用於空氣中的微量氣體與一些常見的碳氫化合物，後者適用於稀薄水溶液的。
利用溫度邊界層與濃度邊界層量階分析的結果，找出合適的熱、質傳浮力比參數r，以及涵蓋自然對流及強制對流的混合對流參數ξ，並且定義一些適當的無因次參數與變數，然後可以將我們的統治方程式轉換成比較容易以數值方法求解的無因次方程式。再使用有限差分法求得數值解。
最後將所求得的數值解作圖，探討溫度、濃度的分佈以及熱傳與質傳速率與各個參數之間的關係。可以得知:當混合對流強度ξ值增大，溫度及濃度邊界層會變薄。隨著路易士數的增加，溫度邊界層越厚，而濃度邊界層則越薄。

1.A. Bejan, ”Convection Heat Transfer”,New York：John Wiley & Sons,1984.
2.P. Chen and K. H. Lau, ”Steady state free convection in an unconfined geothermal reservoir ”, J. Grophys. Res., Vol.79,pp.4425-4431,1974.
3.W.J.Minkowycz and P. Chen, ”Free convection about a vertical cylinder embedded in a porous medium ”, Int.J. Heat Mass Transfer,Vol.19,pp.805-813,1976.
4.P. Chen and I-Dee Chang,” Buoyancy induced flows in a saturated porous medium adjacent to impermeable horizontal surface ”,Int.J.Heat Mass Transfer,Vol.19,
pp.1267-1272,1976.
5.P. Chen, K. C. Yeng and K. H. Lau, ”Numerical solutions for steady free convection in confined island geothermal reserviors ”,Proceedings of 1975 International seminar on Future Energy Production Heat and Mass Transfer Problems. Edited by N. Afgan and J.P.Hartnett,1976.
6.P. Chen, ”Constant surface heat flux solutions for
porous layers flows ”,Letters J.Heat Mass Transfer,
Vol.4,pp.119-128, 1977.
7.P. Chen and W. J. Minkowycz, ”Free convection about a vertical flat plat embedded in a porous medium with application to heat transfer from a dike ”,J.Geophys. Res.,Vol.82,pp.2040-2044,1977.
8.P. Chen ”The influence of lateral mass flux on free convection boundary layers in a saturated porous medium ”,Int.J.Heat Mass Transfer,Vol.20,pp.201-206, 1977.
9.P. Chen,”Combined free and forced convection flow about inclined surface in porous media ”, Int.J.Heat Mass Transfer,Vol.20,pp.807-814, 1977.
10.P. Chen,”Similarity solution for mixed convection from horizontal impermeable surfaces in saturated porous media ”,Int.J.Heat Mass Transfer,Vol.20,pp.893-898, 1977.
11.C. H. Johnson and P. Chen, ”Possible similarity solutions for free convection boundary layers adjacent to flat plates in porous media ”, Int.J.Heat Mass Transfer,Vol.21,pp.709-718, 1978.
12.P. Chen, ”Convection heat transfer in porous layer by
integral methods”,Letters J.Heat Mass Transfer,Vol.5,
pp.243-252, 1978.
13.P. Chen and C. T. Hsu, ”Higher-order approximations for Darcian free convective flow about a semi-infinite vertical flat plat ”,J.Heat Transfer,Vol.106,pp.
143-151,1984.
14.P.Chen,”Heat transfer in geothermal system ”,Adv.
Heat Transfer,Vol.14,pp.1-105,1978.
15.P. Chen,”Natural convection in a porous medium,
external flows ”,NATO Advanced Study Institute,
Izmir,Turker,1984.
16.D. S. Riley and D. A. S. Ress, ”Non-Darcian natural convection from arbitrarily inclined heated surfaces in saturated porous media ”,J.Mech.Appl.Math.,Vol.38,
pt.2,pp.277-295,1985.
17.J. T. Hong,C. L. Tien and Kaviany,”Non-darcian effects on vertical-plate natural convection in porous media with high porosities ”,Int.J.Heat Mass Transfer,
Vol.28,pp.2149-2157,1985.
18.R. Vasantha,I.Pop and G.Nath, ”Non-Darcy natural convection over a slender vertical frustum of a cone in a saturated porous medium ”,Int.J.Heat Mass Transfer,
Vol.29,pp.153-156,1986.
19.F.C.Lai and F. A. Kulacki, ”Non-Darcy convection from horizontal impermeable surface in saturated poprous medium ”,Int. J. Heat Mass Transfer,Vol.30,pp.
2189-2192,1987.
20.林孝宗, ”多孔質中垂直等溫板的非達西混合對流 ”, Proceedings Symposium on Transport Phenomena and Applications,pp.141-147,1989.
21.盧中興,多孔質中垂直板與水平板之混合對流,國立中央大學化學工程研究所碩士論文,1989.
22.H. T. Lin,W. S. Yu and C. S. Lu, ”Universal formulations and comprehensive correlations for non-Darcy natural convection and mixed convection in porous media ”,Int. J. Heat Mass Transfer,Vol.34.
pp.2859-2868,1991.
23.C. H. Chen,T. S. Chen and C. K. Chen, ”Non-Darcy mixed convection along nonisothermal vertical surfaces in porous media ”,Int.J.Heat Mass Transfer,Vol.39,
pp.1157-1164,1996.
24.D. A. S. Rees, ”The effect of inertia on free convection from a horizontal surface embedded in a porous medium ”,Int.J.Heat Mass Transfer,Vol.39,
pp.3425-3430,1996.
25.D. A. Nield and A. Bejan. Convection in Porous Media,Springer New York,1992.
26.A. A. Khan and A. Zebib, ”Double diffusive instability in a vertical layer of a porous medium”,J.Heat Transfer,Vol.103,pp.179-181,1981.
27.A. Raptis, G. Tzivanidis and N. Kafousias, ”Free convection and mass transfer flow through a porous medium bounded by an infinite vertical limiting surface with constant suction ”,Lett.Heat Mass Transfer,Vol.8
,pp.417-424,1981.
28.A. Bejan and K. R. Khair, ”Heat and mass transfer by natural convection in a porous medium ”,Int.J.Heat Mass Transfer Vol.28,No.5,pp.909-918,1985.
29.F. C. Lai and F. A. Kulacki, ”Couple heat and mass transfer by natural convection from vertical surface in porous media”,Int.J.Heat Mass Transfer ,Vol.34,pp.
1189-1194,1991.
30.A. Nakayama and M. A. Hossain,”An integral treatment for combined heat and mass transfer by natural convection in a porous medium ”,Int.J.Heat Mass Tranfer,Vol.38,pp.761-765,1995.
31.A. Nakayama and T. Ashizawa, ”A boundary-layer analysis of combined heat and mass-transfer by natural-convection from a concentrated source in a saturated porous-medium ”, Applied Scientific Reserch,Vol.56,pp.1-11,1996.
32.B. Gebhart and L. Pera, ”The nature of vertical natural convection flows resulting from the combined buoyancy effects of thermal and mass diffusion”,Int.J.Heat Mass Transfer,Vol.14,pp.2025-2050,1971.
33.R. W. Elliott and H. Watts, ”Diffusion of some hydro-carbons in air：Aregularity in the diffusion coefficients of a homologous series”, Canadian Journal of Chemistry,Vol.50,pp.31-34,1972.
34.R. C. Reid, J. M. Prausnitz and Thomas K. Sherwood, The properties of gases and liguids,3th ed.,pp.558-559,
McGraw-Hill Book Company.