Experiments have been carried out for combined convective flows of air adjacent to the vertical heated plates in the uniform horizontal forced flows to investigate relationships between the flow and the heat transfer. The experiments cover the ranges of the Reynolds and modified Rayleigh numbers as; Re_L=160-2 300 and Ra_L~*=4.3× 10~5-2.0 × 10~8. The flow fields over plates are visualized with particles and smoke. The results show that the stagnation point moves downward away from the center of the plates when the surface heat flux is beyond a critical value. The condition where the stagnation point begins to move is expressed with the non-dimensional parameters as; Gr_L~*/Re_L~(2.5) = 0.15. Profiles of measured local heat transfer coefficients are smooth even at the stagnation points in all cases examined. When the buoyancy effect is sufficiently weak, the coefficients agree well with those of the wedge flow. With increasing the surface heat flux, the coefficients are augmented to approach asymptotically the boundary layer solution of natural convection along a vertical heated plate. Finally, forced, natural and combined convective flow regimes are classified by the non dimensional parameter (Gr_L~*/Re_L~(2.5)).%図1に示すように，一様かつ水平に流れる気流に直rn交して有限な大きさの加熱平板が置かれ，平板から気rn流に向かって熱が移動する体系は，様々な伝熱機器・rn装置あるいは我々の身近で遭遇する流れのひとつであrnる．この体系下で気流の流速が十分大きければ，平板rnからの伝熱はいわゆる強制対流くさび流れ（Wedgernflow）あるいはHiemenz flowの伝熱問題として取り扱rnえる．
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