http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 장영준(Young June Chang) (검색결과 122 건)
- 무료
- 기관 내 무료
- 유료
-
열전달 특성에 따른 전기용해로 내부 온도예측에 관한 수치적 연구
한동식(Dong-Sik Han),전충환(Chung-Hwan Jeon),장영준(Young-June Chang),송주헌(Ju-Hun Song) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.5
The main objective of this study is to analyze the heat transfer characteristics in the electric furnace. Local temperatures are measured at various locations in the furnace using the B-type thermocouples. In this paper, mathematical heat transfer model has been developed predict temperature distribution by considering the thermal radiation and transient conduction effect on heating element, crucible and furnace walls. The numerical simulation was performed using the ANSYS-Workbench software, and its results were compared with experimental data. The computational results show that the temperature distributions agreed well with experimental results. Finally, a difference in temperature behavior of the crucible was investigated as some heat transfer parameters change.
-
-
장영준(Young June Chang),김재훈(Jae Hun Kim),한승무(Seung Moo Han),김철(Chul Kim) Korean Society for Precision Engineering 2007 한국정밀공학회지 Vol.24 No.3
A internal lobe pump is suitable for oil hydraulics of machine tools, automotive engines, compressors, constructions and other various applications. In particular, the pump is an essential machine element of an automotive engine to feed lubricant oil. The subject of this paper is the theoretical analysis of internal lobe pump whose the main components are the rotors: usually the outer one is characterized by lobes with circular shape, while the inner rotor profile is determined as conjugate to the other. The topic of this paper is the design of a new rotor, which is based on specific performance as different types depending on the shape of the lobe of the outer rotor. First, the design of internal lobe pumps with circular, elliptical, and their combined lobe profiles is considered. The latter is a new type of lobe profile with special shape whose curvature follows a definite function. Then we introduce the performance indexes used for the comparison. Some of these indexes, such as flow rate and flow rate irregularity, are commonly used for the comparison, while specific slipping is particularly suitable in this case. It is possible to notice that the circular and elliptical type is comparable to the circular one or the elliptical one in terms of flow rate irregularity, but has improved performance in terms of specific slipping. Results obtained from the analysis enable the designer and manufacturer of oil pump to be more efficient in this field.
-
-
다이아프램식 수소압축기의 캐비티 내 압력특성 변화에 관한 실험적 연구
신영일(Shin, Young-Il),박현우(Park, Hyun-Woo),이영준(Lee, Young-Jun),송주헌(Song, Ju-Hun),장영준(Chang, Young-June),전충환(Jeon, Chung-Hwan) 한국신재생에너지학회 2009 한국신재생에너지학회 학술대회논문집 Vol.2009 No.06
Diaphragm compressors are used for a hydrogen compression because it can achieve high gas pressure with high purity. But diaphragm's lifetime may depend on the shape of the cavity and deflection from fluctuation the pressure change, which is necessary to monitored. In this study, the gas and hydraulic oil pressure in the cavity were measured as piston speed varies for diaphragm compressor. The results show pressure change quantities were reduced and maximum pressure points are delayed as the piston moves faster. And the hydraulic pressure were elevated as gas pressure elevated. And the compression period was more faster than expansion period.
-
-
이영준(Young-Jun Lee),황민영(Min-Young Hwang),송주헌(Ju-Hun Song),장영준(Young-June Chang),전충환(Chung-Hwan Jeon) 대한기계학회 2010 대한기계학회 춘추학술대회 Vol.2010 No.11
The objective of this study was to investigate the combustion characteristics of a sintering burner in the various design factors which were distance and angle of each injection hole. To analyze the characteristics, the numerical study was conducted y 3 cases of differential hole distance and 4 types of hole angle which were 40, 45°, 50°, 55° at each case. To validate the numerical study, an experimental study was performed in a unit of the sintering burner at same conditions of the iron ore sintering process. Throughout the results, some difference was existed in the combustion characteristics about the design factors.
-
최수진,전충환,장영준,Choi, Su-Jin,Jeon, Chung-Hwan,Chang, Young-June 대한기계학회 2000 大韓機械學會論文集B Vol.24 No.2
Lean combustion in a SI engine is one of the best solution for the improvement of fuel economy and reduction of pollutant emission. In order to access a lean combustion engine, stable combustion at lean AlF ratio is needed. In this paper, the effect of fuel injection timing on lean misfire limit has been investigated in an MPI engine. To investigate the interaction of injection timing and intake flow characteristics, three different swirl generating SCV(swirl control valve) configurations were considered, and investigated their effects on lean misfire limit and torque at full load operation. Also the effects of spark timing on lean combustion has been investigated. Lean combustion has been examined and the results are reported in this paper. SCV B has been developed to satisfy the requirements of sufficient swirl generation to improve lean combustion and stable performance. It is found that injection timing, spark timing and intake air motion govern the stable lean combustion.
-
메탄/공기 다중 분류 예혼합 화염에서의 유동과 연소 특성
강길영(Kil Young Kang),장영준(Young June Chang),전충환(Chung Hwan Jeon) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.11
An experimental study was carried out to investigate the combustion characteristics of an array of multiple pre-mixed methane/air flame jets. The combustion characteristics such as operating ranges and NOx emission were examined with the variation of design factors including slot shape, slot size, and spacing. The flow of the between-jets was compared with using computational analysis. The interaction effects and flow characteristics were analyzed with the jet-to-jet spacing (S/D<SUB>e</SUB>) and slot shape.
-
이석영(Suk-young Lee),전충환(Chung-\han Jeon),장영준(Young-june Chang) 한국자동차공학회 2002 한국자동차공학회 지부 학술대회 논문집 Vol.2002 No.3
The concept of this engine was created by Ko in 1996 year. Performance simulation for this engine is presented in this paper. The volume of chamber at eccentric shaft angle is evaluated by using geometric models of rotor and rotor housing. A thermodynamic model which includes the first law of thermodynamics, combustion and heat transfer from chamber contents to surroundings is employed. Three processes of gas compression, combustion and expansion are considered and the pressure, temperature and heat release at each shaft angle in each process are computed in this performance simulation. If this engine is manufactured, this performance simulation must be useful for optimal design of this engine with parametric study for various design parameters and operating conditions.<br/>
ScienceON연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
