{"title":"Exact Solution and Instability for Saturn’s Stratified Circumpolar Atmospheric Flow","authors":"Jin Zhao, Xun Wang","doi":"10.1007/s00021-024-00906-y","DOIUrl":"10.1007/s00021-024-00906-y","url":null,"abstract":"<div><p>In this paper, we present an exact solution for the nonlinear governing equation coupled with relevant boundary conditions, which arise from the study of Saturn’s stratified circumpolar atmospheric flow. The solution is explicit in the Lagrangian framework by specifying its hypotrochoidal particle paths. An instability result of such nonlinear waves is also obtained by means of the short-wavelength instability approach.</p></div>","PeriodicalId":649,"journal":{"name":"Journal of Mathematical Fluid Mechanics","volume":"27 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142636663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Global Classical Solution to the Strip Problem of 2D Compressible Navier–Stokes System with Vacuum and Large Initial Data","authors":"Tiantian Zhang","doi":"10.1007/s00021-024-00900-4","DOIUrl":"10.1007/s00021-024-00900-4","url":null,"abstract":"<div><p>In this work, we modify the weighted <span>(L^p)</span> bounds for elements of the Hilbert space <span>(tilde{D}^{1,2}(Omega ))</span>. Using this bound, we derive the upper bound for the density, which is the key issue to global solution provided the shear viscosity is a positive constant and the bulk one is <span>(lambda = rho ^{beta })</span> with <span>(beta >4/3)</span>. Our results extend the earlier results due to Vaigant-Kazhikhov (Sib Math J 36:1283–1316, 1995) where they required that <span>(beta >3)</span>, initial densities is strictly away from vacuum, and that the domain is bounded.</p></div>","PeriodicalId":649,"journal":{"name":"Journal of Mathematical Fluid Mechanics","volume":"27 1","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142579427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Ill-Posedness for the Cauchy Problem of the Modified Camassa-Holm Equation in (B_{infty ,1}^0)","authors":"Zhen He, Zhaoyang Yin","doi":"10.1007/s00021-024-00903-1","DOIUrl":"10.1007/s00021-024-00903-1","url":null,"abstract":"<div><p>In this paper, we prove the norm inflation and get the ill-posedness for the modified Camassa-Holm equation in <span>(B_{infty ,1}^0)</span>. Therefore we completed all well-posedness and ill-posedness problem for the modified Camassa-Holm equation in all critical spaces <span>(B_{p,1}^frac{1}{p})</span> with <span>(pin [1,infty ])</span>.</p></div>","PeriodicalId":649,"journal":{"name":"Journal of Mathematical Fluid Mechanics","volume":"26 4","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142451083","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Time Evolution of the Navier–Stokes Flow in Far-Field","authors":"Masakazu Yamamoto","doi":"10.1007/s00021-024-00904-0","DOIUrl":"10.1007/s00021-024-00904-0","url":null,"abstract":"<div><p>Asymptotic expansion in far-field for the incompressible Navier–Stokes flow are established. It is well known that a velocity decays slowly in far-field. This property prevents classical procedure giving asymptotic expansions of solutions with high-order. In this paper, under natural settings and moment conditions on the initial vorticity, technique of renormalization together with Biot–Savart law derives an asymptotic expansion for velocity with high-order. Especially scalings and large-time behaviors of the expansions are clarified. By employing them, time evolution of velocity in far-field is drawn. As an appendix, asymptotic behavior of solutions as time variable tends to infinity is given. In this assertion, large-time behavior of velocity is discovered clearly.</p></div>","PeriodicalId":649,"journal":{"name":"Journal of Mathematical Fluid Mechanics","volume":"26 4","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142443176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Remark on the Local Well-Posedness of Compressible Non-Newtonian Fluids with Initial Vacuum","authors":"Hind Al Baba, Bilal Al Taki, Amru Hussein","doi":"10.1007/s00021-024-00901-3","DOIUrl":"10.1007/s00021-024-00901-3","url":null,"abstract":"<div><p>We discuss in this short note the local-in-time strong well-posedness of the compressible Navier–Stokes system for non-Newtonian fluids on the three dimensional torus. We show that the result established recently by Kalousek, Mácha, and Nečasova in https://doi.org/10.1007/s00208-021-02301-8 can be extended to the case where vanishing density is allowed initially. Our proof builds on the framework developed by Cho, Choe, and Kim in https://doi.org/10.1016/j.matpur.2003.11.004 for compressible Navier–Stokes equations in the case of Newtonian fluids. To adapt their method, special attention is given to the elliptic regularity of a challenging nonlinear elliptic system. We show particular results in this direction, however, the main result of this paper is proven in the general case when elliptic <span>(W^{2,p})</span>-regularity is imposed as an assumption. Also, we give a finite time blow-up criterion.</p></div>","PeriodicalId":649,"journal":{"name":"Journal of Mathematical Fluid Mechanics","volume":"26 4","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00021-024-00901-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142443362","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"On Isolated Singularities for the Stationary Navier–Stokes System","authors":"Alfonsina Tartaglione","doi":"10.1007/s00021-024-00905-z","DOIUrl":"10.1007/s00021-024-00905-z","url":null,"abstract":"<div><p>The classical problem of removable singularities is considered for solutions to the stationary Navier–Stokes system in dimension <span>(nge 3)</span> and an old theorem of Shapiro (TAMS 187:335–363, 1974) is recovered and extended to solutions in a half ball vanishing on the flat boundary. Moreover, for <span>(n=4)</span> it is proved that there are not distributional solutions, smooth away from the singularity and such that <span>(u(x)=O(|x|^{-1}))</span>.</p></div>","PeriodicalId":649,"journal":{"name":"Journal of Mathematical Fluid Mechanics","volume":"26 4","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00021-024-00905-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434855","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Liouville-Type Theorems for the Stationary Ideal Magnetohydrodynamics Equations in (textbf{R}^n)","authors":"Lv Cai, Ning-An Lai, Anthony Suen, Manwai Yuen","doi":"10.1007/s00021-024-00902-2","DOIUrl":"10.1007/s00021-024-00902-2","url":null,"abstract":"<div><p>In this paper, we establish Liouville-type theorems for the stationary ideal compressible magnetohydrodynamics system in <span>(textbf{R}^n)</span> with <span>(nin {1, 2, 3})</span>. We address various cases when the finite energy condition is in force and the stationary density function <span>(rho )</span> satisfies <span>(displaystyle lim _{|x|rightarrow infty }rho (x)=rho _infty ge 0)</span>. Our proof relies heavily on the good structure of the nonlinear magnetic force term and the usage of well-chosen smooth cut-off test functions.\u0000</p></div>","PeriodicalId":649,"journal":{"name":"Journal of Mathematical Fluid Mechanics","volume":"26 4","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142411235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Non-zonal Rossby–Haurwitz Solutions of the 2D Euler Equations on a Rotating Ellipsoid","authors":"Chenghao Xu","doi":"10.1007/s00021-024-00884-1","DOIUrl":"10.1007/s00021-024-00884-1","url":null,"abstract":"<div><p>In this article, we investigate the incompressible 2D Euler equations on a rotating biaxial ellipsoid, which model the dynamics of the atmosphere of a Jovian planet. We study the non-zonal Rossby–Haurwitz solutions of the Euler equations on an ellipsoid, while previous works only considered the case of a sphere. Our main results include: the existence and uniqueness of the stationary Rossby–Haurwitz solutions; the construction of the traveling-wave solutions; and the demonstration of the Lyapunov instability of both the stationary and the traveling-wave solutions.</p></div>","PeriodicalId":649,"journal":{"name":"Journal of Mathematical Fluid Mechanics","volume":"26 4","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142409367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Thin Film Model for Meniscus Evolution","authors":"Amrita Ghosh, Juan J. L. Velázquez","doi":"10.1007/s00021-024-00893-0","DOIUrl":"10.1007/s00021-024-00893-0","url":null,"abstract":"<div><p>In this paper, we discuss a particular model arising from sinking of a rigid solid into a thin film of liquid, i.e. a liquid contained between two solid surfaces and part of the liquid surface is in contact with the air. The liquid is governed by Navier–Stokes equation, while the contact point, i.e. where the gas, liquid and solid meet, is assumed to be given by a constant, non-zero contact angle. We consider a scaling limit of the liquid thickness (lubrication approximation) and the contact angle between the liquid–solid and the liquid–gas interfaces close to <span>(pi )</span>. This resulting model is a free boundary problem for the equation <span>(h_t + (h^3h_{xxx})_x = 0)</span>, for which we have <span>(h>0)</span> at the contact point (different from the usual thin film equation with <span>(h=0)</span> at the contact point). We show that this fourth order quasilinear (non-degenerate) parabolic equation, together with the so-called partial wetting condition at the contact point, is well-posed. Furthermore, the contact point in our thin film equation can actually move, contrary to the classical thin film equation for a droplet arising from the no-slip condition. Additionally, we show the global stability of steady state solutions in a periodic setting.</p></div>","PeriodicalId":649,"journal":{"name":"Journal of Mathematical Fluid Mechanics","volume":"26 4","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00021-024-00893-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142412998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Diego A. Rueda-Gómez, Elian E. Rueda-Fernández, Élder J. Villamizar-Roa
{"title":"Numerical Analysis for a Non-isothermal Incompressible Navier–Stokes–Allen–Cahn System","authors":"Diego A. Rueda-Gómez, Elian E. Rueda-Fernández, Élder J. Villamizar-Roa","doi":"10.1007/s00021-024-00898-9","DOIUrl":"10.1007/s00021-024-00898-9","url":null,"abstract":"<div><p>In this paper we develop the numerical analysis for a non-isothermal diffuse-interface model, in dimension <span>(N=2, 3,)</span> that describes the movement of a mixture of two incompressible viscous fluids. This model consists of modified Navier–Stokes equations coupled with a phase-field equation given by a convective Allen–Cahn equation, and energy transport equation for the temperature; which admits a dissipative energy inequality. We propose an energy stable numerical scheme based on the Finite Element Method, and we analyze optimal weak and strong error estimates, as well as convergence towards regular solutions. In order to construct the numerical scheme, we introduce two extra variables (given by the gradient of the temperature and the variation of the energy with respect to the phase-field function) which allows us to control the strong regularity required by the model, which is one of the main difficulties appearing from the numerical point of view. Having the equivalent model, we consider a fully discrete Finite Element approximation which is well-posed, energy stable and satisfies a set of uniform estimates which allow to analyze the convergence of the scheme. Finally, we present some numerical simulations to validate numerically our theoretical results.</p></div>","PeriodicalId":649,"journal":{"name":"Journal of Mathematical Fluid Mechanics","volume":"26 4","pages":""},"PeriodicalIF":1.2,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00021-024-00898-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142412932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}