Experimental and numerical investigation of the flow and heat transfer in conical Swirl Cooling Chambers

锥形涡流冷却室中流动和传热的实验和数值研究

基本信息

项目摘要

The main goals in the development of industrial gas turbines and aero-gas turbines are the reduction of fuel consumption as well as the drastic reduction of pollutant emissions. This can be achieved, for example, by increasing the thermal efficiency of the gas turbine with the help of an increase in the process temperature. However, the increased combustion chamber temperature and the increased turbine inlet temperature are today already well above the melting temperature of the blade material, which makes it necessary to develop efficient turbine blade internal cooling strategies. Currently, various internal cooling concepts are being investigated in detail, such as ribbed channels, pin fins, impingement jets, dimples and cyclone cooling chambers. Cyclone cooling (swirl cooling or vortex tubes) are characterized by very high heat transfer rates. In the first funding period (FP1) of this project, vortex tubes with convergent tube cross-sections in the flow direction were investigated both experimentally and numerically. Here, a very good agreement between measurement results, such as the heat transfer measured with the transient liquid crystal technique and Detached Delayed Eddy Simulations (DDES) could be achieved. In addition, stability effects play an important role in heat and mass transfer processes. Therefore, the stability of the flow in the vortex tube was investigated using various stability criteria, with a focus on the stability criterion by Marsik, which is based on the second law of thermodynamics. In the current proposal for the second funding period (FP2), the investigations are now to be extended to cyclone cooling chambers with diverging cross-sections in the main flow direction. Due to the widening cross-sectional area in the direction of the flow, the swirl and the resulting detachment areas are significantly influenced. The flow is, thus, destabilized in a targeted manner. It is expected that the shaping will lead to higher heat transfer rates. Analogous to FP1, the flow and the heat transfer in the divergent cyclone cooling chambers will be investigated numerically by means of DDES and experimentally by means of PIV and the transient liquid crystal method. Furthermore, stability investigations for this geometry will again be carried out based on the second law of thermodynamics. At the end of the project, after six years, there will be detailed knowledge about the influence of convergent and divergent cross-sectional flows in swirl cooling chambers. This understanding of the very complex flow and heat transfer in convergent and divergent vortex tubes should help to successfully use such cooling systems for blade cooling in the future, for example in new types of gas turbine blades.
工业燃气轮机和航空燃气轮机发展的主要目标是减少燃料消耗以及大幅度减少污染物排放。这可以实现,例如,通过在过程温度的增加的帮助下增加燃气轮机的热效率。然而,随着燃烧室温度的升高和涡轮入口温度的升高,目前已经远远超过了叶片材料的熔化温度,因此有必要开发高效的涡轮叶片内部冷却策略。目前,各种内部冷却概念正在被详细研究,如肋形通道、钉鳍、撞击射流、凹窝和旋风冷却室。旋风冷却(漩涡冷却或漩涡管)的特点是非常高的传热率。在本项目第一资助期(FP1),对管截面在流动方向上收敛的涡管进行了实验和数值研究。在此,瞬态液晶技术测量的传热结果与分离延迟涡模拟(DDES)的测量结果非常吻合。此外,稳定性效应在传热传质过程中也起着重要作用。因此,本文采用各种稳定性判据对涡流管内流动的稳定性进行了研究,重点研究了基于热力学第二定律的Marsik稳定性判据。在第二个筹资期(FP2)的目前提案中,调查现在将扩展到在主要流动方向上具有不同截面的旋风冷却室。由于在流动方向上横截面积变宽,旋流和由此产生的分离面积受到显著影响。因此,以一种有针对性的方式破坏了流的稳定性。预计成形将导致更高的传热率。与FP1类似,本文将采用DDES对发散式旋风冷却室内的流动和传热进行数值研究,并采用PIV和瞬态液晶法进行实验研究。此外,这种几何结构的稳定性研究将再次基于热力学第二定律进行。在项目结束时,也就是6年之后,将会对旋流冷却室中汇聚和发散截面流的影响有详细的了解。这种对汇聚和发散涡旋管内非常复杂的流动和传热的理解,应该有助于在未来成功地将这种冷却系统用于叶片冷却,例如在新型燃气轮机叶片中。

项目成果

期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ monograph.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ sciAawards.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ conferencePapers.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ patent.updateTime }}

Professor Dr.-Ing. Bernhard Weigand其他文献

Professor Dr.-Ing. Bernhard Weigand的其他文献

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

{{ truncateString('Professor Dr.-Ing. Bernhard Weigand', 18)}}的其他基金

Fundamental Investigations on Sability and Structure of Flow and Heat Transfer in Cyclone Cooling Chambers
旋风冷却室流动与传热的稳定性和结构的基础研究
  • 批准号:
    193145365
  • 财政年份:
    2011
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Investigation on the Influence of the Velocity Distribution and the Turbulent Fluctuations at the Nozzle Exit on the Liquid Jet Breakup with Direct Numerical Simulation of Multiphase Flows
多相流直接数值模拟研究喷嘴出口速度分布和湍流脉动对液体射流破碎的影响
  • 批准号:
    197550856
  • 财政年份:
    2011
  • 资助金额:
    --
  • 项目类别:
    Priority Programmes
Experimentelle und numerische Untersuchungen zur Tropfen-Film-Interaktion
滴膜相互作用的实验和数值研究
  • 批准号:
    190433411
  • 财政年份:
    2011
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Heat Transfer in 3D-Vane-Passages - Systematic Generation and Investigation of Contoured Vane-Endwall Geometries for Turbomachines Using the Ice Formation Method
3D 叶片通道中的传热 - 使用冰形成方法系统生成和研究涡轮机的轮廓叶片端壁几何形状
  • 批准号:
    174475364
  • 财政年份:
    2010
  • 资助金额:
    --
  • 项目类别:
    Research Grants
"Eis-Formations"-Methode - Optimierung von Turbomaschinenkomponenten
“结冰”方法——涡轮机械部件的优化
  • 批准号:
    5442917
  • 财政年份:
    2005
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Numerische Untersuchungen zum Wärmeübergang bei komplexen Innenströmungen mit wirbelerzeugenden Elementen
涡流发生元件复杂内部流动传热的数值研究
  • 批准号:
    21767636
  • 财政年份:
    2005
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Numerical investigations on heat transfer in complex internal flows with vortex generators
利用涡流发生器对复杂内部流动中的传热进行数值研究
  • 批准号:
    5407142
  • 财政年份:
    2003
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Numerical calculation of three-dimensional transport phenomena of deformed droplets, small droplet groups, and liquid ligaments in a fluid flow
流体流动中变形液滴、小液滴群和液韧带三维输运现象的数值计算
  • 批准号:
    5243436
  • 财政年份:
    2000
  • 资助金额:
    --
  • 项目类别:
    Priority Programmes
Investigation of Droplet Motion and Grouping
液滴运动和分组的研究
  • 批准号:
    409029509
  • 财政年份:
  • 资助金额:
    --
  • 项目类别:
    Research Grants

相似国自然基金

超声行波微流体驱动机理的试验研究
  • 批准号:
    51075243
  • 批准年份:
    2010
  • 资助金额:
    39.0 万元
  • 项目类别:
    面上项目
关于图像处理模型的目标函数构造及其数值方法研究
  • 批准号:
    11071228
  • 批准年份:
    2010
  • 资助金额:
    32.0 万元
  • 项目类别:
    面上项目
非管井集水建筑物取水机理的物理模拟及计算模型研究
  • 批准号:
    40972154
  • 批准年份:
    2009
  • 资助金额:
    41.0 万元
  • 项目类别:
    面上项目
孔隙介质中化学渗流溶解面非稳定性的理论分析与数值模拟实验研究
  • 批准号:
    10872219
  • 批准年份:
    2008
  • 资助金额:
    35.0 万元
  • 项目类别:
    面上项目

相似海外基金

ThorougH experiMental and numerical investigation of Coupled processes for geologiC Carbon Storage
地质碳储存耦合过程的彻底实验和数值研究
  • 批准号:
    EP/X026019/1
  • 财政年份:
    2023
  • 资助金额:
    --
  • 项目类别:
    Fellowship
Numerical and experimental investigation of the impact of preferential flow and nonequilibrium thermodynamics on meltwater transport through snow
优先流和非平衡热力学对融水通过雪输送影响的数值和实验研究
  • 批准号:
    2243631
  • 财政年份:
    2023
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Experimental Investigation and Numerical Analysis of the Behaviour of Plate Anchor Foundations Subjected to Cyclic Loading in Sands
砂土中循环荷载作用下板锚基础性能的实验研究和数值分析
  • 批准号:
    2888310
  • 财政年份:
    2023
  • 资助金额:
    --
  • 项目类别:
    Studentship
Numerical and experimental investigation of fluoride crystals as vacuum ultr aviolet light emitters
氟化物晶体作为真空紫外光发射器的数值和实验研究
  • 批准号:
    23K13047
  • 财政年份:
    2023
  • 资助金额:
    --
  • 项目类别:
    Grant-in-Aid for Early-Career Scientists
Experimental and numerical investigation of infrastructure in warming permafrost
永久冻土变暖基础设施的实验和数值研究
  • 批准号:
    571785-2022
  • 财政年份:
    2022
  • 资助金额:
    --
  • 项目类别:
    University Undergraduate Student Research Awards
Multiscale Experimental and Numerical Investigation of Impacts of Turbulence and Vegetation on Flow and Solute Transport in Hyporheic Zone
湍流和植被对地下水流和溶质运移影响的多尺度实验和数值研究
  • 批准号:
    2209591
  • 财政年份:
    2022
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Collaborative Research: Grain to Channel Scale Experimental and Numerical Investigation of Cohesive Sediment Transport
合作研究:粘性沉积物迁移的颗粒到通道尺度的实验和数值研究
  • 批准号:
    2150797
  • 财政年份:
    2022
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Experimental and Numerical Investigation of Multiphase (Solid-Liquid-Gas) Flow: Application to Respiratory Drug Delivery
多相(固-液-气)流的实验和数值研究:在呼吸药物输送中的应用
  • 批准号:
    RGPIN-2022-05055
  • 财政年份:
    2022
  • 资助金额:
    --
  • 项目类别:
    Discovery Grants Program - Individual
Collaborative Research: Grain to Channel Scale Experimental and Numerical Investigation of Cohesive Sediment Transport
合作研究:粘性沉积物迁移的颗粒到通道尺度的实验和数值研究
  • 批准号:
    2150796
  • 财政年份:
    2022
  • 资助金额:
    --
  • 项目类别:
    Standard Grant
Numerical and experimental investigation of the influence of coarse aggregate type on concrete strength
粗骨料类型对混凝土强度影响的数值和试验研究
  • 批准号:
    574395-2022
  • 财政年份:
    2022
  • 资助金额:
    --
  • 项目类别:
    Alexander Graham Bell Canada Graduate Scholarships - Master's
{{ showInfoDetail.title }}

作者:{{ showInfoDetail.author }}

知道了