CAJ | 학술논문

在分析激光测速试验资料基础上,对比了光滑壁面明渠陡坡中均匀流和非均匀流垂向流速分布在不同水力条件下的规律.陡坡均匀流中κ值比非均匀流条件下为小,非均匀流中S_2型非均匀流的黏性底层厚度和过渡层范围均小于S_1型非均匀流,并且拟合出适合陡坡均匀流和非均匀流的统一流速分布公式.
재분석격광측속시험자료기출상,대비료광활벽면명거두파중균균류화비균균류수향류속분포재불동수력조건하적규률.두파균균류중κ치비비균균류조건하위소,비균균류중S_2형비균균류적점성저층후도화과도층범위균소우S_1형비균균류,병차의합출괄합두파균균류화비균균류적통일류속분포공식.
Based on the experimental data measured by LDV system, vertical velocity distribution were well compared for suberitical and supereritical flow under the different hydraulic condition in the open ehannel.Karman numberκin uniform flow with steep slope is smaller than in non-uniform flow. Viscous sublayer thickness、 buffer layer scope in S_2 water surface profile are both smaller than in S_1 water surface profile. A unified formula of velocity distribution in an open water channel with steep slope is testified.