1 / 11

A EROSPACE E NGINEERING L ABORATORY (MAE308)

A EROSPACE E NGINEERING L ABORATORY (MAE308) . P ROF . S EUNG W OOK B AEK D IV . OF A EROSPACE E NGINEERING , KAIST, IN KOREA R OOM : Building N7-2 #3304 T ELEPHONE : 3714 swbaek@kaist.ac.kr http://procom.kaist.ac.kr T A : H YEMIN K IM R OOM : Building N7-2 #3315

stacey
Download Presentation

A EROSPACE E NGINEERING L ABORATORY (MAE308)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. AEROSPACE ENGINEERING LABORATORY (MAE308) • PROF. SEUNG WOOK BAEK • DIV.OFAEROSPACE ENGINEERING, KAIST, IN KOREA • ROOM: Building N7-2 #3304 • TELEPHONE : 3714 • swbaek@kaist.ac.kr • http://procom.kaist.ac.kr • TA: HYEMIN KIM • ROOM: Building N7-2 #3315 • TELEPHONE : 3754 • enok2695@kaist.ac.kr

  2. MAE 308 Understanding of polytropic process by using RCM • CONTENTS • 1. Objectives • 2. Background • 3. Experimental setup • 4. Isothermal, Adiabatic process • 5. Thermodynamic relation PROPULSION AND COMBUSTION LABORATORY AEROSPACE ENGINEERING LABORATORY

  3. Objective Polytropic process using the RCM Week 1 Week 2 • RCM operation with air • by varying operation speed • operation with various gases • estimation of • thermodynamic process Determination of specific heat ratio index

  4. Background What is RCM?(Rapid compression machine) → Experimental simulator of HCCI (Homogeneous Charge Compression Ignition) → Single compression stroke Application → Combustion experiment → Analysis of product gas

  5. Experimental setup

  6. Isothermal process n = 1 (monatomic), n = 5/3(diatomic)

  7. Adiabatic process Very short time

  8. Isothermal, Adiabatic process • Carnot cycle • Isothermal process • during heat exchange • Isentropic compression • and expansion Isothermal Heat in Heat in Isentropic compression Isentropic expansion Heat out Isothermal Heat out

  9. Thermodynamic relation Operation time t → 0 Adiabatic 0<t<∞ Polytropic Isothermal t →∞ Ppeak1 > Ppeak2> Ppeak3 State 2. State 1.

  10. Thermodynamic relation Heat loss through the wall… Polytropic process !! Controlling Parameters : Thermal conductivity, internal flow, operation time ….

  11. Thermodynamic relation Thermodynamic relation Operation time Vs. index n Adiabatic Ideal case (Adiabatic) n=1.4(N2), 1.667(Ar) (Isothermal) n=1.0 (Polytropic) n = ? n = LogCRPPeak Index n distribution according to time and CR at aircase

More Related