Characteristic Study of Film Thickness on Countercurrent of Water-Air Flow in Hot-Leg Simulator of L/D = 25 by using Parallel-Wire Methods

Radhi Ariawan


In water-air counter current flow, relative movement between water and air occurred. The results of this movement interfacial instability occurred in the flow, causing the liquid film moves up and down. In this study, film thickness characteristics of water-air counter current flow in L/D=25 hot-leg simulator are identified. Film thickness measurement was carried out using parallel-wire sensor consists of parallel wires installed through the pipe’s cross sectional area with spacing of 5 mm. sensor has wire diameter of 0,51 mm made from copper coated in silver. This experimental study was carried out with water superficial velocity (JL) variation of JL=0,003 m/s, JL=0,032 m/s, and JL=0,065 m/s. From the film thickness measurement, film thickness characteristics of water-air counter current flow are identified based on the flow pattern and the position of onset of flooding. JL variation affects the occurring time of flow pattern change, hydraulic jump, and onset of flooding. Hydraulic jump and onset of flooding position occurred further from the bend as the JL increased. Onset of flooding occurrence time is faster as the JL bigger.

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Deendarlianto, Vallée, C., Lucas, D., Beyer, M., Pietruske, H., Carl, H., 2008, Experimental Study on The Air/water Counter-current Flow Limitation in A Model of the Hot Leg of A Pressurized Water Reactor, Nuclear Engineering and Design, Vol. 238 (12), pp.3389-3402.

Bankoff S.G., Lee S.C., 1983, A Critical Review of The Flooding Literature. Multiphase Science and Technology Vol. 2, Springer-Verlag Berlin Heidelberg, Page 98.

Brown, R.C., Andreussi, P. and Zanelli, S. (1978), The Use of Wire Probes for the Measurement of Liquid Thickness in Annular Gas-Liquid Flows, Can. J Chern. Eng. 56: 754-757.

Koskie, J.E., Mudawar, I., Tiederman, W.G. (1989), Parallel Wire Probes for Measurements of Thick Liquid Films, Int. J Multiphase Flow 15: 521-530.

Andriyanto S., Anam B., Indarto, Deendarlianto, Experimental Investigation of Liquid Holdup in Horizontal Two Phase Annular Flow Using Constant Electric Current Method (CECM), Seminar Nasional ke-8 Tahun 2013: Rekayasa Teknologi Industri dan Informasi, STTNAS.

Badarudin A., Indarto, Deendarlianto, W. S. Manurung, Karakterisasi Tebal Cairan pada Aliran Dua Fase Udara-Air Berlawanan Arah dalam Pipa Kompleks pada Bagian Horizontal Menggunakan Metode Parallel-wire, Proceeding National Symposium on Thermofluids VIII, Yogyakarta, 10 November 2016.

Badarudin A., Indarto, Deendarlianto, Hermawan, Saka A., M. Fikri H. S., Wicaksono A., Observasi Karakteristik CCFL pada Ppa Kompleks, Seminar Nasional ke-9: Rekayasa Teknologi Industri dan Informasi, Sekolah Tinggi Teknologi Nasional, Yogyakarta, 2016, pp. 371-375.

Badarudin A., Arman M., Interpretasi Hasil Pengukuran Tebal Cairan pada Aliran Dua Fase Udara-Air Berlawanan Arah Menggunakan Metode Parallel-Wire dalam Pipa Kompleks, Prosiding Seminar Nasional XI “Rekayasa Teknologi Industri dan Informasi, Sekolah Tinggi Teknologi Nasional, Yogyakarta, 2016.

S. Al Issa, R. Macian, 2011, A Review of CCFL Phenomenon, Annals of Nuclear Energy 38 pp. 1795-1819.

Deendarlianto, Ousaka, A., Kariyasaki, A., Fukano, T., 2005. Investigation of Liquid Film Behavior at The Onset of Flooding During Adiabatic Counter-Current Air-Water Two Phase Flow in An Inclined Pipe, Nuclear Engineering and Design, Vol. 235, pp.2281-2294.

Wongwises, S., 1996, Two-Phase Countercurrent Flow in A Model of A Pressurized Water Reactor Hot Leg, Nuclear Engineering and Design Vol. 166, pp.121-133.

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