Effect of drops on turbulence of kerosene-water two-phase flow in vertical pipe
The effect of introducing kerosene drops on turbulence of kerosene-water two-phase in a vertical pipe is investigated experimentally. A hot-film and dual optical probes are used to measure the water velocity, turbulence fluctuation, drop relative velocity, volume fraction and drop diameter. Experime...
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| Format: | Article |
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2015
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| _version_ | 1796947053603979264 |
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| author | Hamad, F.A. Ganesan, P. |
| author_facet | Hamad, F.A. Ganesan, P. |
| author_sort | Hamad, F.A. |
| collection | UM |
| description | The effect of introducing kerosene drops on turbulence of kerosene-water two-phase in a vertical pipe is investigated experimentally. A hot-film and dual optical probes are used to measure the water velocity, turbulence fluctuation, drop relative velocity, volume fraction and drop diameter. Experiments are performed in a 78.8 mm diameter vertical pipe for four average water velocities of 0.11, 0.29, 0.44 and 0.77 m/s. The measurements were carried out for two area average volume fraction A of 4.6% and 9.2% as well as for water single phase flow to investigate the effect of introducing kerosene drops on two-phase flow turbulence. The kerosene-water mixture was generated by adding the kerosene to constant flow rates of water. The results indicate that drops induced turbulence is a function of the ratio of the drop Reynolds number (U(r)d(B)/v) to the turbulence Reynolds number (u'L-t/v) which decreased with higher water velocities. The results show that the Kolmogorov-Richardson scaling in the range of -4.5/3 to -6/3 for single phase flow which is replaced by -6/3 to -7/3 for two-phase flow. These values are less than -8/3 for air-water flow. (C) 2015 Elsevier Inc. All rights reserved. |
| first_indexed | 2024-03-06T05:41:04Z |
| format | Article |
| id | um.eprints-16439 |
| institution | Universiti Malaya |
| last_indexed | 2024-03-06T05:41:04Z |
| publishDate | 2015 |
| record_format | dspace |
| spelling | um.eprints-164392016-09-14T07:04:42Z http://eprints.um.edu.my/16439/ Effect of drops on turbulence of kerosene-water two-phase flow in vertical pipe Hamad, F.A. Ganesan, P. TA Engineering (General). Civil engineering (General) The effect of introducing kerosene drops on turbulence of kerosene-water two-phase in a vertical pipe is investigated experimentally. A hot-film and dual optical probes are used to measure the water velocity, turbulence fluctuation, drop relative velocity, volume fraction and drop diameter. Experiments are performed in a 78.8 mm diameter vertical pipe for four average water velocities of 0.11, 0.29, 0.44 and 0.77 m/s. The measurements were carried out for two area average volume fraction A of 4.6% and 9.2% as well as for water single phase flow to investigate the effect of introducing kerosene drops on two-phase flow turbulence. The kerosene-water mixture was generated by adding the kerosene to constant flow rates of water. The results indicate that drops induced turbulence is a function of the ratio of the drop Reynolds number (U(r)d(B)/v) to the turbulence Reynolds number (u'L-t/v) which decreased with higher water velocities. The results show that the Kolmogorov-Richardson scaling in the range of -4.5/3 to -6/3 for single phase flow which is replaced by -6/3 to -7/3 for two-phase flow. These values are less than -8/3 for air-water flow. (C) 2015 Elsevier Inc. All rights reserved. 2015 Article PeerReviewed Hamad, F.A. and Ganesan, P. (2015) Effect of drops on turbulence of kerosene-water two-phase flow in vertical pipe. International Journal of Heat and Fluid Flow, 56. pp. 152-159. ISSN 0142-727X, DOI: 10.1016/j.ijheatfluidflow.2015.07.020 |
| spellingShingle | TA Engineering (General). Civil engineering (General) Hamad, F.A. Ganesan, P. Effect of drops on turbulence of kerosene-water two-phase flow in vertical pipe |
| title | Effect of drops on turbulence of kerosene-water two-phase flow in vertical pipe |
| title_full | Effect of drops on turbulence of kerosene-water two-phase flow in vertical pipe |
| title_fullStr | Effect of drops on turbulence of kerosene-water two-phase flow in vertical pipe |
| title_full_unstemmed | Effect of drops on turbulence of kerosene-water two-phase flow in vertical pipe |
| title_short | Effect of drops on turbulence of kerosene-water two-phase flow in vertical pipe |
| title_sort | effect of drops on turbulence of kerosene water two phase flow in vertical pipe |
| topic | TA Engineering (General). Civil engineering (General) |
| work_keys_str_mv | AT hamadfa effectofdropsonturbulenceofkerosenewatertwophaseflowinverticalpipe AT ganesanp effectofdropsonturbulenceofkerosenewatertwophaseflowinverticalpipe |