Collaborative Research: Experimental and numerical study on the Reynolds number dependence of surfaces in von Karman turbulent swirling flows
合作研究:冯卡门湍流旋流中表面雷诺数依赖性的实验和数值研究
基本信息
- 批准号:1805921
- 负责人:
- 金额:$ 25万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2018
- 资助国家:美国
- 起止时间:2018-09-01 至 2022-08-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The growth of surfaces, thought of as infinitely thin interfaces that separate regions occupied by fluids with different properties, is a process of intrinsic and practical interest with wide ranging applications in nature, science, and technical devices. As dissimilar fluids mix and interact at interface that separates them, the quantitative characterization of the rates of growth and destruction of surfaces is of critical importance. A comprehensive theory that describes these processes in turbulent flows, which are the most common flows encountered, is unavailable at present. The end goal of the project is to formulate a systematic theory that describes the dynamics of surfaces in turbulent flows depending on the state of the motion of the fluid. A comprehensive theory on the dynamics of surfaces will augment the general theory of turbulent flows, including flows with mixing and chemical reaction, which are found in chemical and energy conversion systems. In addition, this project will improve the understanding of physical processes observed in nature, such as cloud formation, where the evolution of interfaces is the rate limiting process. Thus, although the work is fundamental in nature, it has the potential for broad impacts in science and technology. The project will support the education of two graduate students, and it will also include significant outreach educational activities, which will focus on engaging grades 4-7 students in scientific discovery by investigating the properties of fluid mixing.The overarching goal of the project is to quantify the dependence of the evolution of surfaces in turbulent flows on the Reynolds number. We combine direct numerical simulations and measurements in a novel von Karman turbulent swirling flow setup featuring a shear-driven closed flow between counter-rotating impellers with fully developed turbulence at high Reynolds numbers. The evolution of surfaces in this canonical laboratory flow is tracked quantitatively, while the parameters that describe the flow configuration are varied judiciously to probe a broad range of conditions in the parameter space where different effects are believed to play a role on the evolution of surfaces. The project will fill this broad goal by focusing on two thrusts: (i) Prove or disprove the Reynolds number dependence of the area and growth rates of large surfaces in turbulent flows; (ii) Identify the parameters that scale the evolution of surfaces in turbulent flow through a detailed analysis of the terms in the transport equation for surfaces in turbulence. The direct numerical simulations of the entire device include all geometrical complexities, while experiments feature a novel manner of generating surfaces on demand and state-of the art volumetric measurements of the velocity field and 3D representation of the turbulent. This novel and unique research program is unprecedented as it includes both the broadest range and highest Reynolds numbers ever considered in the study of surfaces in turbulent flows.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
表面的生长,被认为是无限薄的界面,将具有不同性质的流体所占据的区域分开,是一个内在和实际利益的过程,在自然界,科学和技术设备中具有广泛的应用。由于不同的流体在分离它们的界面处混合和相互作用,表面的生长和破坏速率的定量表征是至关重要的。描述湍流中这些过程的综合理论是最常见的流动,目前还没有。该项目的最终目标是制定一个系统的理论,描述湍流中的表面动力学取决于流体的运动状态。表面动力学的综合理论将增强湍流的一般理论,包括在化学和能量转换系统中发现的具有混合和化学反应的流动。此外,该项目将提高对自然界中观察到的物理过程的理解,例如云的形成,其中界面的演变是速率限制过程。因此,虽然这项工作具有根本性,但它有可能对科学和技术产生广泛的影响。该项目将支持两名研究生的教育,还将包括重要的推广教育活动,重点是通过调查流体混合的性质,使4-7年级的学生参与科学发现。该项目的首要目标是量化湍流中表面演变对雷诺数的依赖性。我们结合联合收割机直接数值模拟和测量在一个新的冯卡门湍流旋流设置具有剪切驱动的封闭流之间的反向旋转叶轮充分发展的湍流在高雷诺数。在这个典型的实验室流的表面的演变进行定量跟踪,而描述的流配置的参数是明智地变化,以探测在参数空间中的不同的影响被认为是发挥作用的表面的演变的条件范围广泛。该项目将通过侧重于两个方面来实现这一广泛目标:㈠证明或反驳湍流中大表面面积和增长率对雷诺数的依赖性; ㈡通过详细分析湍流中表面的输运方程中的各项,确定缩放湍流中表面演变的参数。整个设备的直接数值模拟包括所有几何复杂性,而实验功能的一种新的方式产生的表面上的需求和国家的最先进的体积测量的速度场和三维表示的湍流。这一新颖独特的研究计划是前所未有的,因为它包括了湍流表面研究中所考虑的最宽范围和最高雷诺数。该奖项反映了NSF的法定使命,并通过使用基金会的知识价值和更广泛的影响审查标准进行评估,被认为值得支持。
项目成果
期刊论文数量(6)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Evolution and scaling of the peak flame surface density in spherical turbulent premixed flames subjected to decaying isotropic turbulence
经受衰减各向同性湍流的球形湍流预混火焰中峰值火焰表面密度的演变和缩放
- DOI:10.1016/j.proci.2020.06.042
- 发表时间:2020
- 期刊:
- 影响因子:3.4
- 作者:Kulkarni, Tejas;Bisetti, Fabrizio
- 通讯作者:Bisetti, Fabrizio
Analysis of the development of the flame brush in turbulent premixed spherical flames
湍流预混球形火焰中火焰刷的发展分析
- DOI:10.1016/j.combustflame.2021.111640
- 发表时间:2021
- 期刊:
- 影响因子:4.4
- 作者:Kulkarni, Tejas;Bisetti, Fabrizio
- 通讯作者:Bisetti, Fabrizio
Direct numerical simulations of the swirling von Kármán flow using a semi-implicit moving immersed boundary method
使用半隐式移动浸没边界法对旋转冯卡门流进行直接数值模拟
- DOI:10.1016/j.compfluid.2021.105132
- 发表时间:2021
- 期刊:
- 影响因子:2.8
- 作者:Kasbaoui, M. Houssem;Kulkarni, Tejas;Bisetti, Fabrizio
- 通讯作者:Bisetti, Fabrizio
Reynolds number scaling of burning rates in spherical turbulent premixed flames
球形湍流预混火焰中燃烧速率的雷诺数缩放
- DOI:10.1017/jfm.2020.784
- 发表时间:2021
- 期刊:
- 影响因子:3.7
- 作者:Kulkarni, Tejas;Buttay, Romain;Kasbaoui, M. Houssem;Attili, Antonio;Bisetti, Fabrizio
- 通讯作者:Bisetti, Fabrizio
A Macroscopic View of Reynolds Scaling and Stretch Effects in Spherical Turbulent Premixed Flames
球形湍流预混火焰中雷诺尺度和拉伸效应的宏观观察
- DOI:10.2514/6.2022-2115
- 发表时间:2022
- 期刊:
- 影响因子:0
- 作者:Vinod, Aditya;Kulkarni, Tejas;Bisetti, Fabrizio
- 通讯作者:Bisetti, Fabrizio
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Fabrizio Bisetti其他文献
Verification and Validation of a fully-coupled three-dimensional low-temperature plasma and reactive Navier Stokes solver
全耦合三维低温等离子体和反应纳维斯托克斯求解器的验证和确认
- DOI:
10.2514/6.2024-1820 - 发表时间:
2024 - 期刊:
- 影响因子:0
- 作者:
A. Duarte;Fabrizio Bisetti;Nicholas Deak;Lucas Esclapez;Marcus Day - 通讯作者:
Marcus Day
Large-Eddy Simulation of Isothermal Flow in a Technical Swirl Burner for Ammonia Combustion Applications
用于氨燃烧应用的技术旋流燃烧器中等温流的大涡模拟
- DOI:
10.2514/6.2024-0594 - 发表时间:
2024 - 期刊:
- 影响因子:0
- 作者:
Aditya Vinod;Cristian A. Jimenez;Thibault Guiberti;Fabrizio Bisetti - 通讯作者:
Fabrizio Bisetti
Reynolds number scaling and self-similarity of the surface density function of reactive-diffusive interfaces in shear-driven turbulence up to math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si2.svg" display="inline" id="d1e1182" class="math"mrowmsubmrowmtextRe/mtext/mrowmrowmiλ/mi/mrow/msubmo linebreak="goodbreak" linebreakstyle="after"=/momn140/mn/mrow/math
在剪切驱动的湍流中,雷诺数的表面密度函数的reynolds数字和自相似性,直至数学xmlns:mml =“ http://www.w.w.33.org/1998/1998/math/math/math/math/mathml-mathml-mathml” altimg =“ altimg =” class =“ MATH” MROWMSUBMROWMTEXTRE/MTEXT/MROWMROWMIλ/MI/MROW/MSUBMO LINEBREAK =“ GOODBRAKER” LINE BRAKENKSTYLE =“ after” =/MOMN140/MN/MN/MROW/MROW/MATH
- DOI:
10.1016/j.proci.2024.105694 - 发表时间:
2024-01-01 - 期刊:
- 影响因子:5.200
- 作者:
Aditya Vinod;Tejas Kulkarni;Fabrizio Bisetti - 通讯作者:
Fabrizio Bisetti
Reynolds number scaling and self-similarity of the surface density function of reactive-diffusive interfaces in shear-driven turbulence up to <math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si2.svg" display="inline" id="d1e1182" class="math"><mrow><msub><mrow><mtext>Re</mtext></mrow><mrow><mi>λ</mi></mrow></msub><mo linebreak="goodbreak" linebreakstyle="after">=</mo><mn>140</mn></mrow></math>
- DOI:
10.1016/j.proci.2024.105694 - 发表时间:
2024-01-01 - 期刊:
- 影响因子:
- 作者:
Aditya Vinod;Tejas Kulkarni;Fabrizio Bisetti - 通讯作者:
Fabrizio Bisetti
Fabrizio Bisetti的其他文献
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{{ truncateString('Fabrizio Bisetti', 18)}}的其他基金
Fundamentals of turbulent swirl-stabilized combustion of ammonia/hydrogen blends for carbon-free energy applications
用于无碳能源应用的氨/氢混合物的湍流涡流稳定燃烧的基础知识
- 批准号:
2301485 - 财政年份:2023
- 资助金额:
$ 25万 - 项目类别:
Standard Grant
Regimes of plasma-assisted ignition of turbulent hydrocarbon mixtures
湍流烃混合物的等离子体辅助点火方式
- 批准号:
1903775 - 财政年份:2019
- 资助金额:
$ 25万 - 项目类别:
Standard Grant
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Cell Research
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