values of k and e in bubbly and turbulent flows

January 28, 2006, 03:19

i am new to multiphase simulations. i am having problems in estimating k & e values for bubbly flows through pipes particularly at inlet and outlet. are there any theoretical or empirical correlations available?? if so plz give me the reference. hope tht somebody bails me out of this!!

January 28, 2006, 04:02

This is a 1 000 000 $ question !! How big are your bubbles compared to the calculation grid size? What kind of multiphase model are you using ?

January 28, 2006, 07:41

thanx for ur response. i am using eularian 2 fluid, and ASMM model for bubble column simulations. bubble diameter is 5 mm. the height of column is 1mtr with a dia of 19cm. the grid size i am using is 5 mm(radial)* 3.3mm(longitudinal). should i refine my grid size further??

January 28, 2006, 03:19	values of k and e in bubbly and turbulent flows	#1
zack Guest Posts: n/a	i am new to multiphase simulations. i am having problems in estimating k & e values for bubbly flows through pipes particularly at inlet and outlet. are there any theoretical or empirical correlations available?? if so plz give me the reference. hope tht somebody bails me out of this!!

January 28, 2006, 04:02	Re: values of k and e in bubbly and turbulent flow	#2
kharicha Guest Posts: n/a	This is a 1 000 000 $ question !! How big are your bubbles compared to the calculation grid size? What kind of multiphase model are you using ?

January 28, 2006, 07:41	Re: values of k and e in bubbly and turbulent flow	#3
zack Guest Posts: n/a	thanx for ur response. i am using eularian 2 fluid, and ASMM model for bubble column simulations. bubble diameter is 5 mm. the height of column is 1mtr with a dia of 19cm. the grid size i am using is 5 mm(radial)* 3.3mm(longitudinal). should i refine my grid size further??

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