Standard Cascade Experiment for Typical High-Load and Large-Turn-Angle Compressor Airfoils (NPU-28))

Reliable and comprehensive compressor cascade test data are essential for establishing high-load compressor design systems and verifying the accuracy of numerical methods. To address the demand for standard cascade test data of high-load compressor blade roots, the absence of authoritative domestic test data, the inadequacy of publicly available data for high-load design needs, and the issue of data misuse due to the lack of flow field quality detection, the National Science and Technology Major Project Group conducted extensive research and discussions. Leveraging the research results from Northwestern Polytechnical University on the influence mechanisms and regulation strategies of planar cascade wind tunnel flow field quality, the independently designed modern high-load compressor standard model cascade NPU-28 (with a blade camber angle of 43.5°, solidity of 1.72, and diffusion factor of 0.5) was established. This study obtained extensive experimental data, including cascade attack angle characteristics, isotropic Mach number on the blade surface, total pressure loss coefficient at the cascade channel exit, and exit flow angle for nine operating conditions within the inflow Mach number range of 0.4 and attack angle range of -10.9° to 5.1°. The data also provide flow field quality parameters, such as inflow Mach number uncertainty, axial velocity density ratio, and exit periodic index, along with measurement positions, test conditions, and inflow turbulence intensity, offering complete test information. Additionally, the data link for the standard blade cascade model NPU-MGS1, based on the DLR compressor Airfoil, is https://www.scidb.cn/s/UbEFZn.可靠且全面的压气机叶栅（compressor cascade）试验数据，对于构建高负荷压气机设计体系、验证数值方法的准确性至关重要。针对高负荷压气机叶根标准叶栅试验数据的需求、国内缺乏权威试验数据、公开数据难以满足高负荷设计需求，以及因未开展流场质量检测导致的数据误用问题，国家科技重大专项课题组开展了大量研究与研讨。依托西北工业大学在平面叶栅风洞流场质量影响机理与调控策略方面的研究成果，课题组建立了自主设计的现代高负荷压气机标准模型叶栅NPU-28（叶片弯角43.5°、稠度1.72、扩散因子0.5）。本研究获取了丰富的试验数据，涵盖来流马赫数范围0.4内、攻角范围-10.9°至5.1°的9种工况下的叶栅攻角特性、叶片表面各向同性马赫数、叶栅通道出口总压损失系数与出口气流角。该数据集还包含来流马赫数不确定度、轴向速度密度比、出口周期指数等流场质量参数，以及测量位置、试验条件与来流湍流强度，提供了完整的试验信息。此外，基于DLR压气机翼型设计的标准叶栅模型NPU-MGS1的数据链接为：https://www.scidb.cn/s/UbEFZn。

搜集汇总

背景与挑战

背景概述

该数据集是西北工业大学开发的高负荷大转角压气机叶栅标准实验数据集（NPU-28），旨在为高负荷压气机设计系统提供可靠、全面的测试数据，并验证数值方法的准确性。它包含九个工况下的详细实验数据，如叶栅攻角特性、叶片表面等熵马赫数、出口总压损失系数和出口气流角，同时提供了流场质量参数和完整测试信息，具有标准化和权威性特点。