跳至主要内容

Investigation of the Behavior of a Jet Issued into Two-Layer Density-Stratified Fluid

Read full paper at:
http://www.scirp.org/journal/PaperInformation.aspx?PaperID=52273#.VI-GN8nQrzE

This study experimentally investigates a jet flow issued into a two-layer density-stratified fluid in a tank and the resultant mixing phenomena. The upper and lower fluids are water and a NaCl- water solution, respectively, with the lower fluid issued vertically upward from a circular nozzle mounted on the tank bottom. Experimental highlights of the jet behavior and mixing phenomena are classified into three patterns according to the jet Reynolds number and mass concentration of the NaCl-water solution. The internal density current clearly occurs along the density interface, and the maximum jet height is predicted by the Froude number defined by the density difference between the upper and lower fluids. The effect of fluid thickness on the maximum jet height is also clarified.
Cite this paper
Shakouchi, S. , Fukue, S. and Uchiyama, T. (2015) Investigation of the Behavior of a Jet Issued into Two-Layer Density-Stratified Fluid. Journal of Flow Control, Measurement & Visualization, 3, 1-9. doi: 10.4236/jfcmv.2015.31001.
 

[1] Turner, J.S. (1965) The Coupled Turbulent Transports of Salt and Heat across a Sharp Density Interface. Journal of Heat and Mass Transfer, 8, 759-767. http://dx.doi.org/10.1016/0017-9310(65)90022-0
[2] Baines, W.D., Turner, J.S. and Campbell, I.H. (1990) Turbulent Fountains in an Open Chamber. Journal of Fluid Mechanics, 212, 557-592. http://dx.doi.org/10.1017/S0022112090002099
[3] Bloomfield, L.J. and Kerr, R.C. (1998) Turbulent Fountains in a Stratified Fluid. Journal of Fluid Mechanics, 358, 335-356. http://dx.doi.org/10.1017/S0022112097008252
[4] Bloomfield, L.J. and Kerr, R.C. (1999) Turbulent Fountains in a Confined Stratified Environment. Journal of Fluid Mechanics, 389, 27-54. http://dx.doi.org/10.1017/S0022112099004772
[5] Lin, Y.J.P. and Linden, P.F. (2005) The Entrainment Due to a Turbulent Fountain at a Density Interface. Journal of Fluid Mechanics, 542, 25-52. http://dx.doi.org/10.1017/S002211200500635X
[6] Ansong, J.K., Kyba, P.J. and Sutherland, B.R. (2008) Fountains Impinging on a Density Interface. Journal of Fluid Mechanics, 595, 115-139. http://dx.doi.org/10.1017/S0022112007009093
[7] Papanicolaou, P.N. and Stamoulis, G. (2010) Spreading of Buoyant Jets and Fountains in a Calm, Linearly Density- Stratified Fluid. In: Christodoulou, G.C. and Stamou, A.I., Eds., Environmental Hydraulics, 123-128.
[8] Srinarayana, N., Williamson, N., Armfield, S.W. and Lin, W. (2010) Line Fountain Behavior at Low-Reynolds Number. International Journal of Heat and Mass Transfer, 53, 2065-2073.
http://dx.doi.org/10.1016/j.ijheatmasstransfer.2009.12.048
[9] Baddour, R.E., Asce, M. and Zhang, H. (2009) Density Effect on Round Turbulent Hypersaline Fountain. Journal of Hydraulic Engineering, 135, 57-59.
http://dx.doi.org/10.1061/(ASCE)0733-9429(2009)135:1(57)
[10] Druzhinin, O.A. and Troitskaya, Y.I. (2012) Regular and Chaotic Dynamics of a Fountain in a Stratified Fluid. Chaos: An Interdisciplinary Journal of Nonlinear Science, 22, Article ID: 023116.
[11] Druzhinin, O.A. and Troitskaya, Y.I. (2013) Internal Wave Radiation by a Turbulent Fountain in a Stratified Fluid. Fluid Dynamics, 48, 827-836. http://dx.doi.org/10.1134/S0015462813060136
[12] Guilbault, G.G. (1973) Practical Fluorescence; Theory, Methods, and Techniques. Marcel Dekker, Inc., New York.
[13] Simpson, J.E. (1982) Gravity Currents in the Laboratory, Atmosphere, and Ocean. Annual Review of Fluid Mechanics, 14, 213-234. http://dx.doi.org/10.1146/annurev.fl.14.010182.001241                       eww141216lx
标签：

评论

发表评论

此博客中的热门博文

Does Immigration Promote the Investment of the Monopolistic Firm?

In the present paper, we examine the effect of increasing uncertainty of immigrants’ growth on the optimal timing of investment of a firm that has a monopolistic power over the labor market. It is revealed that when the uncertainty of immigrants’ growth is more than a threshold level, increasing uncertainty of immigrants’ growth accelerates the optimal timing of firms’ investment and enhances the economic growth, even if the uncertainty of immigrants’ growth is formulated by the geometric Brownian motion, which is in sharp contrast to the standard result that an increase in the uncertainty postpones the optimal timing. With an increase in the immigrants over the past ten years, workforces in the host countries have been growing significantly to the extent that the immigrants represent 70% of the increase in the workforce in Europe, and 47% in the United States as OECD indicates. In the present paper, we attempted to investigate the effect of increased uncertainty caused by the growi...
发表评论
阅读全文

Education Policy Implementation: A Mechanism for Enhancing Primary Education Development in Zanzibar

Education is one of the fundamental rights of individuals; therefore, the government of a country needs to develop and strengthen educational policy and quality as well as to ensure that everyone has equal access to basic education. The improvement of access and quality of education in the world is becoming as an essential factor in development, whereas the basic education (primary school), is acknowledged as a foundation of the higher educational development for every country. To fulfill this goal, governments introduce several policies and procedures; however, it requires some reforms and participation from the politician, policymakers, and other stakeholders to re-examine educational policy so that it can lead to multiplication and betterment of the reforms. Educational reforms actually focus on accountability. A positive educational development and reform is very challenging and needs more effort and strategy on how to use and utilize the resources effectively as such it can achie...
发表评论
阅读全文