|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Experimental Studies on The Mechanism and Control of Secondary Flow Losses in Turbine Cascades显示文摘This paper summarizes the results of the authors' 4 year experimental studies on the secondary flow losses in turbine cascades.cascade wind tunnel experiments were carried out concerning the influence of aspect rations,incidence,turning angles and outer endwall divergent angles in order to unveil the evolution mechanism of secondary flow losses in turbine cascades without end clearance.Some methods for controlling the secondary flows are investigated including the blade leaning,blade cambering,endwall convergence and leading edge extension at two ends of the blade. | Wang Zhongqi Han Wanjin Xu Wenyuan Harbin Institute of Technology | 1992 | Journal of Thermal Science1992，1，3： | 7 |
| 2 | Retrofit design of composite cooling structure of a turbine blade by fluid networks and conjugate heat transfer methods显示文摘This article discusses the development of the numerical methods of gas flow coupled with heat transfer,and introduces the fluid net-works method for rapid prediction of the performance of the composite cooling structures in turbine blade.The reliability of these methods is verified by comparing experimental data.For a HPT rotor blade,a rapid prediction on the internal cooling structures is first made by using the fluid network analysis,then an assessment of aerodynamic and heat transfer characteristics is conducted.Based on the network analysis results,three ways to improve the design of the cooling structures are tested,i.e.,adjusting the cooling gas flow mass ratios for different inner cooling cavities,reducing the flow resistances of the channel turning structures,and improving the local internal cooling structure geometries with high temperature distribution.Through the verification of full three-dimensional gas/solid/coolant conjugate heat transfer calculation,we conclude that the modified design can make the overall temperature distribution more even by significantly reducing the highest temperature of the blade surface,and reasonably matching the parameters of different coolant inlets.The results show that the proposed calculation methods can remarkably reduce the design cycle of complex turbine blade cooling structure. | YAN PeiGang SHI Liang WANG XiangFeng HAN WanJin | 2013 | Science China(Technological Sciences)2013，56，12： | 5 |
| 3 | BEM/FDM Conjugate Heat Transfer Analysis of a Two-dimensional Air-cooled Turbine Blade Boundary Layer显示文摘A coupled 边界元素方法(BEM ) 和有限差别方法(频分多路复用) 被使用解决结合热转移问题一二维空气冷却汽轮机片界面层。泛泛地联合的策略被采用,在哪个地方程的每个集合被解决为其它提供边界条件。海军司烧方程被 HIT-NS 代码解决。在这代码, FDM 被收养并且被用来在液体区域解决对流的热转移。BEM 代码被用来在稳固的区域解决传导热转移。一个重申的集中标准在液体固体接口是温度和热流动的连续性。从在这篇论文采用的 BEM 的数字结果在对分析答案的结果和商业代码的结果的好同意,例如流畅 6.2。BEM 避免在另外的计算方法需要的复杂网孔并且节省计算时间。结果证明在这篇论文采用的 BEM 能与更少的边界点在数字结果给一样的精确。比较 conjugate 与一个绝热壁流动答案的数字结果结果,它在金属温度的分发揭示重要差别。结果从结合热转移分析是更精确的,他们接近汽轮机的现实主义的热环境。 | Wang Zhenfeng Yan Peigang Guo Zhaoyuan Han Wanjin | 2008 | Journal of Thermal Science2008，17，3： | 4 |
| 4 | Effects of Hot Steam Injection from the Slot at the Trailing Edge on Turbine Nozzle Vane Flow Field显示文摘Moisture removal slot configurations with three different opening widths are in turn set at the trailing edges of a turbine hollow guide vane.The flow fields are analyzed by two-phase flow numerical simulation of solving the steady three dimensional Reynolds averaged Navier-Stokes equations on the basis of the real water vapor thermo-physical properties,and the blade temperature field is solved by the fluid-solid coupling.Exergy parame- ter is introduced as a measure to evaluate the economic cost of energy conversion process.The results indicate that the bigger slot allow lower quality of hot steam in the case of the equivalent injected quantity,while it has a higher exergy effective efficiency of the mixing process in the cascade channels.The hot steam injecting at the trailing edges has an optimal injected mass flow rate for a relatively large slot,on this point the exergy effective efficiency is the maximum,namely the flow loss is the minimum. | Liang Xu Peigang Yan Hongyan Huang Wanjin Han | 2008 | Journal of Thermal Science2008，17，4： | 3 |
| 5 | Unsteady Numerical Simulation of Steam-Solid Two-Phase Flow in the Governing Stage of a Steam Turbine显示文摘Solid particle erosion (SPE) in an ultra-supercritical steam turbine control stage with block configuration is investigatednumerically, based on the finite volume method and the fluid-particle coupling solver. We apply the particlediscrete phase model to model the solid particles flow, and use the Euler conservation equations to solve thecontinuous phase. The investigation is focused on the influence of the solid particle parameters (such as particlediameter, particle velocity and particle trajectory) on the erosion rate of the stator and rotor blade surface in unsteadycondition. The distributions of the highly eroded zone on the stator and rotor blade surfaces are shown anddiscussed in detail according to the mechanism of solid particle/blade wall interaction. We obtain that the erosionrate of the vane blade is sensitive to the fluctuation of the potential flow field, and the smaller particle has agreater impact on the erosion distribution of rotor blade. The erosion rate does not entirely depend on the diametersize of the solid particle. | Yufeng Li Peigang Yan Wanjin Han | 2009 | Journal of Thermal Science2009，18，4： | 2 |
| 6 | Effects of leaning and curving of blades with high turning angles on the aerodynamic characteristics of turbine rectangular cascades显示文摘 | HAN Wanjin TAN Chunqing SHI Hong | 1994 | Journal of Turbomachinery1994，116，3： | 1 |
| 7 | Numerical Study of Improving Aerodynamic Performance of Low Solidity LPT Cascade through Increasing Trailing Edge Thickness显示文摘This paper presents a new idea to reduce the solidity of low-pressure turbine(LPT) blade cascades,while remain the structural integrity of LPT blade.Aerodynamic performance of a low solidity LPT cascade was improved by increasing blade trailing edge thickness(TET).The solidity of the LPT cascade blade can be reduced by about12.5% through increasing the TET of the blade without a significant drop in energy efficiency.For the low solidity LPT cascade,increasing the TET can decrease energy loss by 23.30% and increase the flow turning angle by1.86% for Reynolds number(Re) of 25,000 and freestream turbulence intensities(FSTT) of 2.35%.The flow control mechanism governing behavior around the trailing edge of an LPT cascade is also presented.The results show that appropriate TET is important for the optimal design of high-lift load LPT blade cascades. | LI Chao YAN Peigang WANG Xiangfeng HAN Wanjin WANG Qingchao | 2016 | Journal of Thermal Science2016，25，4： | 1 |
| 8 | Numerical Investigation of Influence of Rotor/Stator Interaction on Blade Boundary Layer Flow in a Low Speed Compressor显示文摘Numerical method was applied to the unsteady flow simulation at the mid span of a two-stage low speed compressor,and the blade boundary layer flow under rotor/stator interaction was investigated.By the model of wake/boundary layer interaction provided in this paper,the simulated blade frictional force and the boundary layer turbulent kinetic energy,the influence of wake/potential flow interaction on the blade boundary layer flow was analyzed in detail.The results show that under the condition of rotor/stator interaction,the wake is able to induce the stator laminar boundary layer flow to develop into turbulent flow within a certain range of wake interaction.In the stator suction boundary layer,an undisturbed region occurs behind the rotor wake,which extends the laminar flow range,and the wake with high turbulent intensity has the capability to control the boundary layer separation under adverse pressure gradient. | Yao Hongwei Yan Peigang Han Wanjin | 2011 | Journal of Thermal Science2011，20，1： | 1 |
| 9 | Effects of leaning and curving of blades with high turning angles on the aerodynamic characteristics of turbine rectangular cascades显示文摘 | HAN Wanjin WANG Zhongqi TAN Chunqing | 1994 | ASME Journal of Turbomachinery1994，116，3： | 1 |
| 10 | Rotation Effect on Flow and Heat Transfer for High-Temperature Rotor Blade in a Heavy Gas Turbine显示文摘In this paper,the composite inner cooling structures of the rotating blade in the first stage heavy gas turbine were modeled and simulated by coupling heat transfer (CHT).The flow characteristics and heat transfer performances were comparatively analyzed under two operations of the stationary and the rotational states.The results show that the turbulence intensity,the flow resistance and the heat transfer level of the rotating coolant are significantly increased compared with the stationary state,which is considered to be obtained by the combined effects of the Coriolis force,the centrifugal force and their derived buoyancy forces.It is pointed out that the rotation leads to the non-uniform flow of film holes at the leading edge of the pressure surface along blade height.In addition,it increases the slope of the limiting streamline,which has a decisive influence on the heat transfer of both the pressure and suction surfaces.The paper provides guidance for the design of a rotating composite cooling structure based on the relations between the stationary and rotational conditions. | DONG Aihua YAN Peigang QIAN Xiaoru HAN Wanjin WANG Qingchao | 2021 | Journal of Thermal Science2021，30，2： | 0 |
| 11 | Flow Visualization and Topological Analysis of a Turbine Rotor Cascade with Tip Clearance显示文摘By means of ink trace visualization and topological allalysis, this paper investigates the topological structure of the flow pattern surrounding both endwalls and blade surfaces for a low aspect ratio linear rotor cascade with tip cIearance. The structure of the flow pattern shows that most of the singular points and separation lines are located in the upper half span region of the tested cascade where the aerodynamic behaviors are deteriorated. | Han Wanjin Liu Fengjun Zhong Jingjun Wang Zhongqi (Department of Power Engineering, Harbin Institute of Technology, Harbin, 150001, China) | 1997 | Journal of Thermal Science1997，6，3： | 0 |
| 12 | Numerical Study of Effects of Mach number on Aerodynamic Performance of Large Enthalpy Drop Stationary Cascade显示文摘Based on the method to change blade loading type along blade height, that is, applying aft-loading at both end zones of cascade while applying fore-loading in the mid zone of cascade, HTC(Harbin Turbine Company) designed a twisted and bowed stationary cascade with low aspect ratio and large enthalpy drop. To verify the aerodynamic performance of such cascade, firstly, low-speed wind tunnel tests were conducted to validate the calculation results of commercial software CFX, and then numerical simulations were made for the aerodynamic performance of the cascade at different Mach numbers. The simulation results show that the large enthalpy drop stationary cascade designed by HTC can offer good aerodynamic performance while keeping its high-load characteristics in the change range of outlet Mach number as stated in this paper. | SHI Yuwen YAN Peigang HAN Wanjin | 2014 | Journal of Thermal Science2014，23，3： | 0 |
| 13 | Investigation of modification design of the fan stage in axial compressor显示文摘The S2 flow path design method of the transonic compressor is used to design the one stage fan in order to replace the original designed blade cascade which has two-stage transonic fan rotors.In the modification design,the camber line is parameterized by a quartic polynomial curve and the thickness distribution of the blade profile is controlled by the double-thrice polynomial.Therefore,the inlet flow has been pre-compressed and the location and intensity of the shock wave at supersonic area have been controlled in order to let the new blade profiles have better aerodynamic performance.The computational results show that the new single stage fan rotor increases the efficiency by two percent at the design condition and the total pressure ratio is slightly higher than that of the original design.At the same time,it also meets the mass flow rate and the geometrical size requirements for the modification design. | Xun ZHOU,Peigang YAN and Wanjin HAN Energy Science and Engineering School,Harbin Institute of Technology,Harbin,150001,China | 2010 | Journal of Thermal Science2010，19，2： | 0 |
| 14 | CDYL作为丁烯酰辅酶A水合酶调控组蛋白丁烯酰化及精子发生显示文摘文章简介本研究发现,转录辅抑制因子CDYL具有负调控组蛋白赖氨酸丁烯酰化的功能。有趣的是,CDYL负调控组蛋白丁烯酰化并不是通过直接从底物赖氨酸上去除丁烯酰基的方式实现的,而是利用CDYL的丁烯酰辅酶A水合酶活性。 | Shumeng Liu Huajing Yu Yongqing Liu Xinhua Liu Yu Zhang Chen Bu Shuai Yuan Zhe Chen Guojia Xie Wanjin Li Bosen Xu Jianguo Yang Lin He Tong Jin Yundong Xiong Luyang Sun Xiaohui Liu Chunsheng Han Zhongyi Cheng 梁静 尚永丰 | 2018 | 科学新闻2018，0，4： | 0 |
| 15 | Numerical Study of Combining Steady Vortex Generator Jets and Deflected Trailing Edge to Reduce the Blade Numbers of Low Pressure Turbine Stage显示文摘A flow control system that combined steady Vortex Generator Jets and Deflected Trailing-edge(VGJs-DT) to decrease the low pressure turbine(LPT) blade numbers was presented.The effects of VGJs-DT on energy loss and flow of low solidity low pressure turbine(LSLPT) cascades were studied.VGJs-DT was found to decrease the energy loss of LSLPT cascade and increase the flow turning angle.VGJs-DT decreased the solidity by 12.5%without a significant increase in energy loss.VGJs-DT was more effective than steady VGJs.VGJs-DT decreased the energy loss and increased the flow angle of the LSLPT cascade with steady VGJs.VGJs-DT can use 50%less mass flow than steady VGJs to inhibit the flow separation in the LSLPT cascade.The deflected trailing edge enhanced the ability of steady VGJs to resist flow separation.Overall,VGJs-DT can be used to control flow separation in LPT cascade and reduce the blade numbers of low pressure turbine stage. | Li Chao YAN Peigang Wang Xiangfeng HAN Wanjin WANG Qingchao | 2016 | Journal of Thermal Science2016，25，6： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员