European Journal of Mechanics B-fluids最新文献

{"title":"Analysis of flow structure of liquid metal pulsating cross flow in-line tube bundles with various pitch-to-diameter ratio","authors":"Hantao Jiang,&nbsp;Wenqiang Suo,&nbsp;Yingwen Liu","doi":"10.1016/j.euromechflu.2025.204259","DOIUrl":"10.1016/j.euromechflu.2025.204259","url":null,"abstract":"<div><div>In order to further improve the efficiency and safety of tube bundle heat exchangers, liquid metal cross flow tube bundles under pulsating inlet flow conditions are investigated in this paper. The simulation study is carried out using the <em>k-kl-ω</em> turbulence model, which has been validated by previous experimental data, for in-line tube bundles with different arrangements. The numerical studies were carried out for pulsating velocity amplitude of 0.5, frequency of 10, and Re of 20,000 with transverse and streamwise pitch-to-diameter ratios of 1.5, 1.65, and 1.8. The analysis of the circumferential pressure drop factor of the tube bundle reveals that the pulsating flow excites the secondary flow at the back side of the bundle, which strengthens the local flow field, while the increase in global pressure drop is more pronounced at a smaller pitch ratio. Enlarged figure of the local time-averaged flow field show the differential flow behaviors at different pitch ratios, further revealing the obvious asymmetric characteristics of the secondary flow. The local secondary flow time-averaged results show that the first three columns of secondary flow are enhanced more than three times as much as in normal flow. Finally, the time series of secondary flow is analyzed by using power spectral density, continuous wavelet transform, and combined with Gaussian multimodal decomposition to reveal the representative secondary flow change characteristics at the back side of the tube in the first three columns. Finally, the distribution map of vortex structure features under the simulation parameters of this paper is given.</div></div>","PeriodicalId":11985,"journal":{"name":"European Journal of Mechanics B-fluids","volume":"113 ","pages":"Article 204259"},"PeriodicalIF":2.5,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143947507","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dynamics of a neutrally-buoyant elliptic particle in a square cavity with two adjacent moving walls: A lattice Boltzmann simulation","authors":"Taha Rezaee","doi":"10.1016/j.euromechflu.2025.204261","DOIUrl":"10.1016/j.euromechflu.2025.204261","url":null,"abstract":"<div><div>This study investigates the dynamics of a neutrally buoyant elliptical particle in a cavity with two adjacent moving walls, employing the Lattice Boltzmann Method (LBM) coupled with an improved smoothed profile method. The influence of Reynolds number, initial position and orientation, aspect ratio, and relative size on the particle's limit cycle is analyzed in two distinct scenarios: converging walls and diverging walls. The results demonstrate that the initial orientation and position of the particles significantly affect their trajectories, particularly in the converging wall case, where particles interact dynamically with the evolving vortex structures. The aspect ratio of the particle also plays a critical role, with increased elongation leading to more complex trajectories. Overall, this research enhances the understanding of how particle shape and flow conditions influence the behavior of rigid macro-particles in fluid flows, which has implications for various applications in microfluidics and biomedical engineering.</div></div>","PeriodicalId":11985,"journal":{"name":"European Journal of Mechanics B-fluids","volume":"113 ","pages":"Article 204261"},"PeriodicalIF":2.5,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143947509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Flow past a porous plate of a new class of fluids with limiting stress: Analytical results and linear stability analysis","authors":"Lorenzo Fusi ,&nbsp;Kumbakonam R. Rajagopal","doi":"10.1016/j.euromechflu.2025.02.007","DOIUrl":"10.1016/j.euromechflu.2025.02.007","url":null,"abstract":"<div><div>We study the linearized stability of the flow of a non-Newtonian fluid that is capable of describing the response of a large class of fluids that seemingly mimic the response of viscoplastic materials like paints, food products, solutions, etc. The flow takes place over a porous solid plate subject to suction at the plate. Not surprisingly, we find that suction decreases the boundary layer thickness and stabilizes the flow, and outside the boundary layer, the velocity is nearly the same as the free-stream velocity. The critical Reynold’s number and marginal stability curves that demarcate the region within which perturbations are stable to linearized disturbances versus those that are unstable, as function of the Reynold’s number, are determined. We find that the flows of the fluid under consideration are more stable than the corresponding flows for the Navier–Stokes fluid.</div></div>","PeriodicalId":11985,"journal":{"name":"European Journal of Mechanics B-fluids","volume":"112 ","pages":"Pages 58-64"},"PeriodicalIF":2.5,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143561665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental and numerical investigations on the impact of two-way interaction assumption in the nasal spray simulations","authors":"Mehdi Liaghat ,&nbsp;Mohammad Abbaszadeh ,&nbsp;Sasan Sadrizadeh ,&nbsp;Omid Abouali","doi":"10.1016/j.euromechflu.2025.204258","DOIUrl":"10.1016/j.euromechflu.2025.204258","url":null,"abstract":"<div><div>Using nasal sprays as a drug delivery method to the nasal cavity is widespread due to their convenience and effectiveness in treating various conditions. The high velocity of droplets exiting the nozzle can significantly impact the flow field, leading to changes in deposition patterns. Therefore, it is crucial to understand the interactions between the droplets and the fluid. In this research, we propose an innovative and cost-effective approach to investigate the two-way interactions between droplets and the fluid in numerical simulations of nasal sprays. We employ ultra-high-speed photography using an infinitesimal light pulse to examine spray puffs and extract droplet characteristics. We aim to determine whether the two-way interaction assumption produces significant differences in a numerical model. We first measured the droplet size distribution and spray cone angle in unconfined ambient conditions to achieve the objective. We then extended the measurement to real-sized 3D printed models of the nasal passage truncated in various sections to analyze how droplet deposition occurs in different nasal locations. We also conducted transient numerical simulations based on the measured data to investigate the importance of two-way interactions assumption. The results of the numerical simulations were then compared to the experimental results. Comparing the experimental and numerical results demonstrated that the two-way interaction assumption produced significant differences, indicating that it must be considered while modeling the nasal spray. Overall, this research's findings can significantly contribute to optimizing the design of nasal sprays and enhancing the effectiveness of drug delivery to the targeted location.</div></div>","PeriodicalId":11985,"journal":{"name":"European Journal of Mechanics B-fluids","volume":"113 ","pages":"Article 204258"},"PeriodicalIF":2.5,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143947506","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of multi-field cavitation structure and dynamic mode decomposition based on a separated venturi cavitation generator","authors":"Xiaoyu Wang ,&nbsp;Tian Wang ,&nbsp;Junqi Ma ,&nbsp;Qiang Sun ,&nbsp;WanYu Lv","doi":"10.1016/j.euromechflu.2025.204257","DOIUrl":"10.1016/j.euromechflu.2025.204257","url":null,"abstract":"<div><div>Cavitation is generated due to the reduction of fluid pressure, which will cause instability and erosion inside the pipeline, valve or pump etc. In this paper, based on the improved venturi cavitation generator, the cavitation under several different flow conditions is studied, and a high-speed camera is used to capture the dynamic process of cavitation at the venturi throat. The flow field simulation data have been analysed using the dynamic mode decomposition method, and the coherent structures of sheet cavitation, transition zone cavitation, and cloud cavitation and their displacements with cycle time have been investigated. The periodic variation of cavitation is analysed using a combination of experimental and numerical simulations, and the state of cavitation in the flow field is investigated in detail using data-driven tools. The results show that periodic changes in the cavitation structure can be observed intuitively through the improved venturi generator and agrees well with the results of simulation. Cavitation intensity is continuously enhanced with the increase of inlet velocity. At flow velocity of 4.68 m/s, the cavitation is manifested as a piecewise cavitation that can only be observed at the throat position, since then the length of the cavitation cloud continues to increase, finally the detachment of a bubble cloud and localized vortex cavitation are observed at velocity of 6.08 m/s. The frequency and growth characteristics of individual flow modes can be accurately captured using the dynamic modal decomposition of the flow field.</div></div>","PeriodicalId":11985,"journal":{"name":"European Journal of Mechanics B-fluids","volume":"113 ","pages":"Article 204257"},"PeriodicalIF":2.5,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143947505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Turbulent entrainment in buoyant releases from horizontal gravity current to vertical planar wall plume","authors":"Safir Haddad ,&nbsp;Samuel Vaux ,&nbsp;Kevin Varrall ,&nbsp;Olivier Vauquelin","doi":"10.1016/j.euromechflu.2025.02.006","DOIUrl":"10.1016/j.euromechflu.2025.02.006","url":null,"abstract":"&lt;div&gt;&lt;div&gt;This paper examines the dynamics of a supercritical, steady, miscible, two-dimensional gravity current flowing along an inclined boundary, with a particular focus on the entrainment, which refers to the mixing between the gravity current and the surrounding fluid. Specifically, the study investigates the combined effects of the Richardson number &lt;span&gt;&lt;math&gt;&lt;mtext&gt;Ri&lt;/mtext&gt;&lt;/math&gt;&lt;/span&gt; and slope &lt;span&gt;&lt;math&gt;&lt;mi&gt;θ&lt;/mi&gt;&lt;/math&gt;&lt;/span&gt; on the entrainment coefficient &lt;span&gt;&lt;math&gt;&lt;mi&gt;E&lt;/mi&gt;&lt;/math&gt;&lt;/span&gt;. To address these objectives, a theoretical study and large-eddy simulations (LES) were conducted, varying the slope angle from 0° to 90°, while maintaining constant injection conditions.&lt;/div&gt;&lt;div&gt;The theoretical investigation of gravity currents resulted in the extension of the theoretical model of Ellison and Turner (1959) in the general non-Boussinesq case as well as the identification of two specific angles: the critical angle &lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;θ&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;c&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;, beyond which no transition between supercritical to subcritical behaviour is observed, and the supercritical angle &lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;θ&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;s&lt;/mi&gt;&lt;mi&gt;c&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;, above which the flow acquires inertia immediately after injection.&lt;/div&gt;&lt;div&gt;On the other hand, the simulations revealed three distinct flow regimes for our source conditions. The first regime, observed at low slopes, exhibits a non-monotonic behaviour, characterized by a transition from a supercritical to a subcritical regime. The second regime, related to the critical angle &lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;θ&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;c&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt;, occurs at intermediate slopes, where the flow remains inertial throughout. In the third regime, related to steeper slopes, the supercritical angle &lt;span&gt;&lt;math&gt;&lt;msub&gt;&lt;mrow&gt;&lt;mi&gt;θ&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mi&gt;s&lt;/mi&gt;&lt;mi&gt;c&lt;/mi&gt;&lt;/mrow&gt;&lt;/msub&gt;&lt;/math&gt;&lt;/span&gt; has been exceeded and the flow immediately gains inertia upon injection. The simulations also enabled an analysis of &lt;span&gt;&lt;math&gt;&lt;mi&gt;E&lt;/mi&gt;&lt;/math&gt;&lt;/span&gt;, which was found to increase with slope and reach a constant value at &lt;span&gt;&lt;math&gt;&lt;mrow&gt;&lt;mi&gt;θ&lt;/mi&gt;&lt;mo&gt;=&lt;/mo&gt;&lt;mn&gt;9&lt;/mn&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mo&gt;∘&lt;/mo&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/span&gt;.&lt;/div&gt;&lt;div&gt;Moreover, a new entrainment law was developed, incorporating both the effects of the Richardson number and the slope: &lt;span&gt;&lt;math&gt;&lt;mrow&gt;&lt;mi&gt;E&lt;/mi&gt;&lt;mo&gt;=&lt;/mo&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;mo&gt;.&lt;/mo&gt;&lt;mn&gt;002&lt;/mn&gt;&lt;mo&gt;cos&lt;/mo&gt;&lt;mrow&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mi&gt;θ&lt;/mi&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/mrow&gt;&lt;mo&gt;/&lt;/mo&gt;&lt;mtext&gt;Ri&lt;/mtext&gt;&lt;mo&gt;+&lt;/mo&gt;&lt;mn&gt;0&lt;/mn&gt;&lt;mo&gt;.&lt;/mo&gt;&lt;mn&gt;09&lt;/mn&gt;&lt;msup&gt;&lt;mrow&gt;&lt;mo&gt;sin&lt;/mo&gt;&lt;/mrow&gt;&lt;mrow&gt;&lt;mn&gt;1&lt;/mn&gt;&lt;mo&gt;/&lt;/mo&gt;&lt;mn&gt;2&lt;/mn&gt;&lt;/mrow&gt;&lt;/msup&gt;&lt;mrow&gt;&lt;mo&gt;(&lt;/mo&gt;&lt;mi&gt;θ&lt;/mi&gt;&lt;mo&gt;)&lt;/mo&gt;&lt;/mrow&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/span&gt;. This law provides a description of the entrainment behaviour across the full range of slope angles. Comparisons between the LES results and the theoretical model demonstrate that the proposed entrainment law offers im","PeriodicalId":11985,"journal":{"name":"European Journal of Mechanics B-fluids","volume":"112 ","pages":"Pages 37-46"},"PeriodicalIF":2.5,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143521250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Numerical study of aerosol behavior in a small room in respiratory events under different flow, relative humidity and temperature conditions","authors":"Juan F. Cerón ,&nbsp;Manuel Martínez","doi":"10.1016/j.euromechflu.2025.02.004","DOIUrl":"10.1016/j.euromechflu.2025.02.004","url":null,"abstract":"<div><div>The present work aims at predicting the behavior of aerosols, in the form of droplets, during coughing or sneezing events to help determine the potential risk of infection by a virus as SARS-CoV-2, where one of its preferred ways of transmission is via airborne droplets. Numerical simulations have been performed for a room where either door-to-window or window-to-door flows are established. The volume corresponding to a person has been included as an obstacle in the computational domain, being the area corresponding to the mouth the source of release of aerosols. An Euler–Lagrange approach is followed to reproduce the aerosols behavior, where the air flow is solved with the Reynolds Averaged Navier–Stokes equations and the aerosols trajectories are computed in a Lagrangian manner including evaporation. Four different cases are simulated varying flow direction, relative humidity and temperature. Flow pattern and obstacles clearly influence droplet behavior, while evaporation reduces the number of droplets in the breathing region, therefore decreasing the risk of infection.</div></div>","PeriodicalId":11985,"journal":{"name":"European Journal of Mechanics B-fluids","volume":"112 ","pages":"Pages 47-57"},"PeriodicalIF":2.5,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143526662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Material barriers to the diffusive magnetic flux in magnetohydrodynamics","authors":"A. Encinas-Bartos ,&nbsp;B. Kaszás ,&nbsp;S. Servidio ,&nbsp;G. Haller","doi":"10.1016/j.euromechflu.2025.02.001","DOIUrl":"10.1016/j.euromechflu.2025.02.001","url":null,"abstract":"<div><div>Recent work has identified objective (frame-indifferent) material barriers that inhibit the transport of dynamically active vectorial quantities (such as linear momentum, angular momentum and vorticity) in Navier–Stokes flows. In magnetohydrodynamics (MHD), a similar setting arises: the magnetic field vector impacts the evolution of the velocity field through the Lorentz force and hence is a dynamically active vector field. Here, we extend the theory of active material barriers from Navier–Stokes flows to MHD flows in order to locate frame-indifferent barriers that minimize the diffusive magnetic flux in turbulent two-dimensional and three-dimensional MHD flows. From this approach we obtain an algorithm for the automated extraction of such barriers from MHD turbulence data. Our findings suggest that the identified barriers inhibit magnetic diffusion, separate electric current sheets and organize the transport of the magnetic energy.</div></div>","PeriodicalId":11985,"journal":{"name":"European Journal of Mechanics B-fluids","volume":"112 ","pages":"Pages 10-21"},"PeriodicalIF":2.5,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143488698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unsteady Couette flow of a class of fluids described by non-monotone models","authors":"Lorenzo Fusi,&nbsp;Antonio Giovinetto,&nbsp;Rebecca Tozzi","doi":"10.1016/j.euromechflu.2025.02.005","DOIUrl":"10.1016/j.euromechflu.2025.02.005","url":null,"abstract":"<div><div>In this paper we study the unsteady Couette motion of an incompressible non-linear fluid driven by a prescribed shear stress or a prescribed velocity imposed on the top surface. The fluid under consideration is described by a non-monotone relation between stress and strain rate. We consider the two-dimensional unsteady problem and solve it numerically by means of Crank–Nicolson scheme combined with spectral collocation method. We investigate the time behaviour of the velocity field, in order to find out, starting from suitable initial conditions, whether the numerical solutions tend to the corresponding stationary one or not. Our results confirm both the stability of the two solutions belonging to the ascending branches of the constitutive law and the linear instability of the one on the descending branch.</div></div>","PeriodicalId":11985,"journal":{"name":"European Journal of Mechanics B-fluids","volume":"112 ","pages":"Pages 1-9"},"PeriodicalIF":2.5,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143488697","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Numerical study of converging shock wave interaction with offset gas bubble containing different gases - Ne, Ar or CO2","authors":"D. Igra ,&nbsp;O. Igra","doi":"10.1016/j.euromechflu.2025.02.002","DOIUrl":"10.1016/j.euromechflu.2025.02.002","url":null,"abstract":"<div><div>This study presents a numerical investigation of the interaction between a converging shock wave and an offset cylindrical gas bubble containing Ne, Ar, or CO₂. Based on the good agreement with experimental findings shown in our previous study, we explored how these gases influence shock wave patterns when a converging shock wave propagating at a Mach number of 1.18 impacts a 50 mm diameter cylindrical bubble. The results reveal complex shock wave dynamics that differ from those observed when planar shocks impact on a cylindrical gas bubble or when a converging shock wave impacts a cylindrical gas bubble located at the center of its focus. Notably, in the case of a Ne-filled bubble, the shock wave focus is outside of the initial bubble location. Each gas produced distinct shock wave behaviors: the Ne bubble exhibited lens-like shock patterns, while in the Ar bubble's case the transmitted and converging shock waves were circular. A second shock wave focusing of the transmitted shock wave was observed inside the Ar bubble, similar to the case of the CO₂ bubble, which experienced earlier focusing than in the SF₆ case (previously studied) but later than Ar. The position of the transmitted shock wave's focus within the bubble varies with gas density, showing that heavier gases result in a focal point located further inside the bubble.</div></div>","PeriodicalId":11985,"journal":{"name":"European Journal of Mechanics B-fluids","volume":"112 ","pages":"Pages 22-36"},"PeriodicalIF":2.5,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143512495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}