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축류홴 설계, 성능, 유동 / 소음 해석 프로그램 개발
김창준(C. J. KIM),백승조(S. J. Baek),전완호(W. H. Jeon) 한국유체기계학회 2001 유체기계 연구개발 발표회 논문집 Vol.- No.-
A program to design an axial flow fan, analyze the performance and predict the noise was developed. In order to develop the low noise fan, that program is compulsory. This software is composed of three parts : the geometric design module, the performance analysis module, the fan noise prediction module. In order to analyze the performance, three dimensional vortex panel method is used. The unsteady flow field was analyzed by time-marching free wake method. The unsteady force data is then used in predicting the noise. Farassat’s equation is used to predict the noise of fan.
퇴적물에서 어류체내로의 DDT, DDE 이동예측과 위험평가
최진영(J.Y. Choi),김경련(K.R. Kim),홍기훈(G.H. Hong),양동범(D.B. Yang),정창수(C.S. Chung),김창준(C.J. Kim),김석현(S.H. Kim) 한국해양환경·에너지학회 2015 한국해양환경·에너지학회 학술대회논문집 Vol.2015 No.5
DDT, DDE로 오염된 환경에 서식하는 어류를 섭취할 경우 인체에 미치는 위해도를 평가하였다. Aquaweb 모형을 사용하여 가상 오염퇴적물로부터 갈치(Trichiurus lepturus), 참돔 (Pagrus major ) 체내에 이동, 축적되는 DDT, DDE의 농도를 계산하였다. 어류 체내에 축적되는 오염물질의 농도는 어류의 종류, 기타환경조건에 따라 차이를 보였다. 이들 어류에 미치는 생태계 위해도는 최대무작용량에 기반한 독성지수 (NOAEL-TQ)를 사용하여 평가하였다. 인체에 미치는 비발암위해도와 발암위해도는 어류가 서식하는 환경조건에 따라 차이를 보였다. 오염퇴적물의 적절힌 관리대안을 수립하기 위해 생태계 먹이그물에서의 오염물질 이동, 축적에 대한 더욱 폭넓은 이해가 필요하다고 본다. The health risk was assessed for human population exposed to DDT and DDE by consuming fish dwelling in a contaminated aquatic environment. Aquaweb model was used to estimate the body burden of DDT and DDE in hairtail (Trichiurus lepturus) and red seabream (Pagrus major ) with the conceptual foodweb model. The body burden of pollutants varied depending on the fish species and the other environmental parameters. We assessed the ecological risk for these fish by calculating No-Observed-Adverse-Effect-Level based Toxicity Quotient (NOAEL-TQ). The carcinogenic risk and noncarcinogenic hazard indices (HI) for human population also varied widely with environmental conditions. Better understanding on the trophic transfer of contaminants in the food web would be necessary for the construction of ecosystem model for the management of contaminated sediments.
안광운(K.-W. Ahn),이승배(S. Lee),백승조(S.-J. Baek),김창준(C.-J. Kim),전완호(W.-H. Jeon) 한국유체기계학회 2001 유체기계 연구개발 발표회 논문집 Vol.- No.-
In this research, we developed a computer code that designs a compressor impeller, which serves as an essential component of a vacuum cleaner, and predicted its performance. The TEIS model originally developed by Japikse(1985), and the mean line analysis are combined to design the centrifugal impeller optimally. In this program. the inlet geometry is designed by using the mean line analysis, and with assumption of resonable exit blade angle, the optimal geometry is searched by means of TEIS model and iterative scheme. The performance of designed impeller was compared with experimental data, and the far-field noise by the rotating impeller is also predicted.
하정진,김창준 동아대학교 공과대학부설 생산기술연구소 1996 生産技術硏究所硏究論文集 Vol.1 No.-
Nowdays, the motives for introducing venture business within a corporation is required as following considerations: management diversifications, activity for the results of new technology development, creation of atmosphere for a new business, and quick response for the changes of demand structure on a new product. In addition, they will be met in the characteristics of the era of post industrialization such as knowledge-based industrial society and matrix organization for a corporation and society structure. In this paper, first, in order to reduce the failure of a new venture, we will analyze the general economic situations and industrial environment. The second is to review the determining factors in the evaluation of a new venture. The third is to examine the profile analysis and the feasibility analysis on technology, market, finance, organization, and competition which provide the means of analyzing strengths and weaknesses in a new venture. Finally the results from these inter-related studies are reported.