http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
배준호(June-ho Bae),손동경(Dong-kyung Sohn) 대한기계학회 2017 대한기계학회 춘추학술대회 Vol.2017 No.11
This paper aims to verify the applicability of open source code, OpenFOAM, to internal flows for the use of nuclear power plant flow simulation. For the verification, several representative flow cases are selected (Plain Couette flow with Pressure Gradient, Cavitation over a sharp-edged circular orifice, Converging-Diverging Nozzle). The simulation results are compared with experimental or theoretical result. Result from Plain Couette flow is similar with analytical solution. And for the Cavitation over a sharp-edged circular orifice, the coefficient of discharge, C<SUB>d</SUB>, is evaluated by experimental result. The Converging-Diverging Nozzle is compressible flow simulation from subsonic to supersonic flow fields. It shows that the flow fields are similar with analytical solution and the location of shock are well predicted. Based on this research, future study using OpenFoam is proposed.
후복막강 섬유화를 동반한 원인 미상의 경화성 장간막염 1예
배준호 ( June Ho Bae ),김성환 ( Seong Hwan Kim ),안상봉 ( Sang Bong Ahn ),손병관 ( Byoung Kwan Son ),조윤주 ( Yun Ju Jo ),박영숙 ( Young Sook Park ),정유민 ( Yu Min Jung ),장연수 ( Yeon Soo Chang ) 대한소화기학회 2011 대한소화기학회지 Vol.58 No.4
Sclerosing mesenteritis is a rare inflammatory disease of the bowel mesentery. It produces tumor-like masses of the mesentery composed of varying degrees of fibrosis, chronic inflammation, and fat necrosis. It has been described variously as fibrosing mesenteritis, retractile mesenteritis, mesenteric Weber Christian disease, and systemic nodular panniculitis. The etiology and pathogenesis of the disease are as yet unknown, but autoimmune disorder, previous abdominal surgery, trauma, and ischemia could play a role. The clinical features include abdominal pain, vomiting, diarrhea, and constipation. Occasionally, patients with this condition may present with bowel obstruction. Rarely, It can be associated with other idiopathic inflammatory disorders such as retroperitoneal fibrosis, sclerosing cholangitis, and orbital pseudotumors. We report a case of idiopathic sclerosing mesenteritis with retroperitoneal fibrosis in a 58-year-old man. (Korean J Gastroenterol 2011;58:221-225)
RANS 난류 모델을 이용한 직각 모서리형 오리피스 내부의 캐비테이션 유동 예측으로부터 얻은 교훈
이공희(Gong Hee Lee),배준호(June Ho Bae) 대한설비공학회 2020 설비공학 논문집 Vol.32 No.5
In-service testing (IST) related system in the nuclear power plant has various types and sizes of orifices for flow control and decompression. Rapid flow acceleration and accompanying pressure drop may cause cavitation inside the orifice, which may result in orifice degradation and structural damage. Since cavitating flows involve complex turbulent two-phase flows, the accurate simulation of this flow by using the available computational fluid dynamics (CFD) software is still a great challenge. In this paper, to assess the prediction accuracy of different Reynolds-averaged Navier-Stokes (RANS)-based turbulence models for the analysis of cavitating flow inside a sharp-edged orifice, the simulation was conducted with the commercial CFD software, ANSYS CFX R18.1. The predicted results were then compared with the correlation based on measured data. Through this comparative study, it was concluded that turbulence models are one of the main factors providing the uncertainties in the simulation of the orifice cavitation flow and therefore, licensing applicants should carefully validate the appropriate selection of the turbulence models when they use the computational result for the orifice cavitation flow as the base data of a licensing document.
호흡기 ; 당뇨병 환자에서의 결핵: 고혈압 환자와의 비교
박은경 ( Eun Kyoung Park ),배준호 ( June Ho Bae ),정유민 ( Yun MinJung ),정숙희 ( Sook Hee Chung ),이재형 ( Jae Hyung Lee ),김상훈 ( Sang Hoon Kim ),이병훈 ( Byoung Hoon Lee ) 대한내과학회 2010 대한내과학회지 Vol.79 No.6
Background/Aims: Tuberculosis remains a major cause of mortality in South Korea, and the prevalence of diabetes is also increasing rapidly. Diabetes is a well known risk factor for tuberculosis. However, the risk varies according to race and regional prevalence. We assessed the potential impact of diabetes as a risk factor for tuberculosis in South Korea. Methods: We performed a retrospective cohort study in a secondary referral hospital. The incidence of tuberculosis in a diabetic cohort was compared with that in a non-diabetic hypertensive cohort for 6 years. Diabetics who visited our diabetic clinic and non-diabetic hypertensive patients who visited our cardiology clinic from Jan 2004 to April 2004 were assigned to the diabetic cohort and the non-diabetic hypertensive cohort, respectively. Patients in each cohort had to receive medications to control their diseases. Patients with end-stage renal disease, malignancy, or HIV infection were excluded. Relative risk and tuberculosis-free survival rates of each cohort were calculated. Results: The incidences of tuberculosis were 32 in the diabetic cohort (n=2491; mean age, 59.1±11.8 years; 44.5% male) and ten in the non-diabetic hypertensive cohort (n=1885; mean age, 59.9±12.8 years; 41.6% male). The estimated annual incidences per 100,000 persons were 282.8 and 112.9, respectively. The relative risk was 2.220 (p=0.028; 95% confidence interval, 1.090~4.523). However, no significant difference in cumulative tuberculosis-free survival rate was observed between the cohorts (p=0.075). Conclusions: A trend for a higher incidence of tuberculosis existed in diabetics, as compared to non-diabetic hypertensive patients, among a Korean population. (Korean J Med 79:646-651, 2010)
결핵성 흉막염 치료 후 잔류된 만성 흉막삼출에서 발생한 가성유미흉
박은경 ( Eun Kyoung Park ),정숙희 ( Sook Hee Chung ),배준호 ( June Ho Bae ),류상열 ( Sang Ryol Ryu ),이재형 ( Jae Hyung Lee ),김상훈 ( Sang Hoon Kim ),조영욱 ( Young Uk Cho ),채정돈 ( Jeong Don Chae ),이병훈 ( Byoung Hoon Lee ) 대한결핵 및 호흡기학회 2009 Tuberculosis and Respiratory Diseases Vol.67 No.5
A pseudochylothorax, a chyliform pleural effusion, is a rare disease of pleural effusion that contains cholesterol crystals or high lipid content that is not the result of a disrupted thoracic duct. Most of the cases were found in patients with long-standing pleural effusion due to chronic inflammatory disease, such as old tuberculous pleurisy or chronic rheumatoid pleurisy. We experienced a case of pseudochylothorax in a 74-year-old man, who was being treated for pulmonary tuberculosis and pleurisy 10 years ago. The diagnosis was confirmed on pathological study of the pleural effusion, which contained cholesterol crystals having a diagnostic rhomboid appearance.