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Investigation into velocity choice for determining aerodynamic resistance in brush seals
Blekinge Tekniska Högskola, Fakulteten för teknikvetenskaper, Institutionen för maskinteknik.
Kunming University of Science and Technology, CHI.
Norwegian University of Science and Technology, NOR.
Kunming University of Science and Technology, CHI.
2019 (Engelska)Ingår i: Lecture Notes in Electrical Engineering, Springer Verlag , 2019, Vol. 484, s. 616-622Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

Brush seal is a novel contact seal in turbomachinery. Although this new type of seal has been adopted for many years, there are still some problems which should be investigated. One of the main problems is the determined pressure differential across a brush seal. Aerodynamic resistance, characterized by Euler number (Eu), is used to determine pressure differential of brush seals. Eu is a dimensionless quantity including a velocity term. Tube banks model is widely used in numerical simulation of brush seals. Various velocity values can be chosen by calculating Eu in a tube banks model. The present research analyzed the effect of different velocity values on Eu. Velocity choice in a tube banks model was preliminarily analyzed. Three different methods (Eu1, Eu2 and Eu3) for calculating Eu were presented. The results revealed that Eu1 decreases as the pressure differential increasing. Eu2 keeps almost unchanged or increase slightly with the growing of pressure differential, as well as Eu3. By comparing Eu1, Eu2 and Eu3 and considering practical application, Eu1 is qualified for measuring the aerodynamic resistance. © Springer Nature Singapore Pte Ltd 2019.

Ort, förlag, år, upplaga, sidor
Springer Verlag , 2019. Vol. 484, s. 616-622
Nyckelord [en]
Aerodynamic resistance, Brush seal, Tube banks model, Velocity distribution, Aerodynamic loads, Aerodynamics, Manufacture, Velocity, Contact seals, Euler numbers, Pressure differential, Tube banks, Seals
Nationell ämneskategori
Annan maskinteknik
Identifikatorer
URN: urn:nbn:se:bth-17472DOI: 10.1007/978-981-13-2375-1_77Scopus ID: 2-s2.0-85059105026ISBN: 9789811323744 (tryckt)OAI: oai:DiVA.org:bth-17472DiVA, id: diva2:1277025
Konferens
8th International Workshop of Advanced Manufacturing and Automation, IWAMA 2018; Changzhou; China; 25 September 2018 through 26 September 2018
Tillgänglig från: 2019-01-09 Skapad: 2019-01-09 Senast uppdaterad: 2019-01-16Bibliografiskt granskad

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Kang, Yachi

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