scholarly journals Existence of axisymmetric and homogeneous solutions of Navier-Stokes equations in cone regions

2021 ◽  
Vol 0 (0) ◽  
pp. 0
Author(s):  
Zaihong Jiang ◽  
Li Li ◽  
Wenbo Lu

<p style='text-indent:20px;'>In this paper, we study axisymmetric homogeneous solutions of the Navier-Stokes equations in cone regions. In [James Serrin. The swirling vortex. Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 271(1214):325-360, 1972.], Serrin studied the boundary value problem in half-space minus <inline-formula><tex-math id="M1">\begin{document}$ x_3 $\end{document}</tex-math></inline-formula>-axis, and used it to model the dynamics of tornado. We extend Serrin's work to general cone regions minus <inline-formula><tex-math id="M2">\begin{document}$ x_3 $\end{document}</tex-math></inline-formula>-axis. All axisymmetric homogeneous solutions of the boundary value problem have three possible patterns, which can be classified by two parameters. Some existence results are obtained as well.</p>

1978 ◽  
Vol 45 (2) ◽  
pp. 435-436 ◽  
Author(s):  
L. T. Watson ◽  
T. Y. Li ◽  
C. Y. Wang

Fluid cushioned porous sliders are useful in reducing the frictional resistance of moving objects. This paper studies the elliptic slider. After a transformation of variables, the Navier-Stokes equations reduce to a nonlinear two-point boundary-value problem. This boundary-value problem was solved by a homotopy-type method, which did not require a good initial approximation to the solution. The problem was solved for several Reynolds numbers and ellipse eccentricities. Lift and drag calculations show that an elliptic porous slider should be operated along the minor axis.


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