التفاصيل البيبلوغرافية
| العنوان: |
Experimental study of the couple effects of internal and external cooling on double-wall laminate structure with novel slot and pin-fins. |
| المؤلفون: |
You, Ruquan1,2,3 (AUTHOR) youruquan10353@buaa.edu.cn, Liu, Runzhou1,2,4 (AUTHOR), Li, Haiwang1,2,4 (AUTHOR) |
| المصدر: |
Applied Thermal Engineering. Feb2025, Vol. 260, pN.PAG-N.PAG. 1p. |
| مصطلحات موضوعية: |
PRESSURE-sensitive paint, HEAT transfer coefficient, RADIAL basis functions, TURBINE blades, FINS (Engineering) |
| مستخلص: |
• A novel TLC method based on thermal inertia correction is proposed. • A double-wall laminate cooling structure with slot and pin-fins is proposed. • The couple effects of internal and external cooling are analyzed in detail. • This work and its results will guide the design of turbine blade cooling. This study investigates the couple effects of internal and external cooling on double-wall laminate cooling (DWLC) structure with novel impingement jet, pin-fins, and slot hole. The distribution of film cooling effectiveness (FCE) and heat transfer coefficient (HTC) were measured using transient liquid crystal (TLC) and pressure sensitive paint (PSP) methods. In order to improve the accuracy of TLC method, a thermal inertia correction method based on radial basis function neural network (RBFNN) was proposed. It was found that the pin-fins would significantly affect the external film cooling characteristics. There is a counter-rotating vortex pair at the downstream of the pin-fins inside the coolant film. This leads to a higher FCE at the downstream region of pin-fins and a lower FCE at the region between the pin-fins. The internal heat transfer is minimally influenced by slot height and inclination angle. Increasing filling ratio greatly reduces the area-averaged FCE and changes the flow field at slot outlet. The DWLC structure in this study shows excellent cooling performance and is currently mainly used in the field of aero-engines. However, it can also be applied to the cooling design of gas turbines, electronics, and other fields after scaling the size. Additionally, the improved TLC experimental method can be widely used in heat transfer measurement in the aforementioned research fields. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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