SPLEEN - High Speed Turbine Cascade – Test Case Database

This is an open-access database of experimental data of the flow in a high-speed low-pressure turbine cascade. The data have been collected at the von Karman Institute for Fluid Dynamics in the period 2018-2022 within the H2020 Clean Sky 2 project SPLEEN – Secondary and Leakage Flow Effects in High-Speed Low-Pressure Turbines, a project in collaboration with Safran Aircraft Engines. This version contains documents that describe the experimental setup, instrumentation, measurement uncertainties, geometries, and database structure. The database contains experimental data of the test campaign conducted on the linear cascade codenamed SPLEEN C1 in the VKI high-speed wind tunnel S1/C. The turbine cascade geometry is representative of designs of high-speed low-pressure turbines for next-generation geared turbofan engines. The measurement datasets describe the flow through the turbine cascade tested at on- and off-design conditions, with and without a wake generator located upstream of the cascade, and with and without endwall cavity injection. The database includes measurements of pressure, temperature, flow angles, Mach numbers, pressure loss, unsteady blade and endwall pressure and quasi-shear-stress. The database includes measurement datasets performed on the turbine cascade WITH a FLAT ENDWALL (no cavity) WITHOUT WAKE GENERATOR (Steady inlet flow), WITH a FLAT ENDWALL (no cavity) AND WAKE GENERATOR (unsteady inlet flow), WITH ENDWALL CAVITY (purged cavity) AND WAKE GENERATOR (unsteady inlet flow). The project has received Funding from the Clean Sky 2 Joint Undertaking under the European Union's Horizon 2020 research and innovation program under the grant agreement 820883.本数据集为高速低压涡轮叶栅内流动实验数据的开放获取数据库。该数据于2018年至2022年间，由冯·卡门流体动力学研究所（von Karman Institute for Fluid Dynamics）在欧盟H2020框架下“洁净天空2号”（Clean Sky 2）项目SPLEEN——高速低压涡轮二次与泄漏流动效应（Secondary and Leakage Flow Effects in High-Speed Low-Pressure Turbines）框架下采集，本项目与赛峰航空发动机（Safran Aircraft Engines）合作开展。 本版本包含实验装置、测量仪器、测量不确定度、几何构型及数据库结构相关的说明文档。 本数据库收录了在冯·卡门流体动力学研究所（简称VKI）高速风洞S1/C中，针对代号为SPLEEN C1的直列叶栅开展的试验序列实验数据。 该涡轮叶栅几何构型适配下一代齿轮传动涡扇发动机的高速低压涡轮设计方案。 本次测量数据集涵盖了叶栅在设计工况与非设计工况下的流动特性，包含叶栅上游有无尾流发生器（wake generator）、端壁腔有无喷射的多种试验场景。数据库收录了压力、温度、流动角、马赫数（Mach number）、压力损失、非定常叶片与端壁压力及准剪切应力的测量数据。 本数据库包含以下三类试验的测量数据集：叶栅采用平面端壁（无腔室）且无尾流发生器（稳态入口流动）、叶栅采用平面端壁（无腔室）且加装尾流发生器（非稳态入口流动）、叶栅采用带吹扫腔室的端壁且加装尾流发生器（非稳态入口流动）。 本项目获得欧盟“地平线2020”（Horizon 2020）研究与创新计划下的洁净天空2联合倡议（Clean Sky 2 Joint Undertaking）资助，资助协议编号为820883。