가변 디퓨저를 장착한 원심 압축기 불안정성 연구

차봉준,임병준,양수석,Cha, Bong-Jun,Im, Byeong-Jun,Yang, Su-Seok 대한기계학회 2002 大韓機械學會論文集B Vol.26 No.8

An experimental study on the performance and instability development characteristics of a centrifugal compressor equipped with a cambered variable diffuser has been performed with varying diffuser vane angles. The test was conducted at the design speed of 20,800 rpm and the 80% design speed of 16,640 rpm for 5 diffuser angles : 65$^{\circ}$, 70$^{\circ}$, 75$^{\circ}$, 77.5$^{\circ}$, 80$^{\circ}$ The steady performance test results showed that choking mass flow rate decreases and total pressure ratio increases with a narrowed surge margin as the diffuser vane angle increases. Unsteady pressures were measured using high-frequency pressure transducers at the inducer and the diffuser throat to investigate the instability phenomena such as rotating stall and surge inside the compressor. From the unsteady measurements, it is found that the transient process from rotating stall to surge was mainly affected by diffuser angles. The results of the present study can be applied to the instability control of the centrifugal compressors using a variable diffuser.

압축기 분야 연구동향

차봉준,Cha, Bong-Jun 한국유체기계학회 2007 한국유체기계학회 논문집 Vol.10 No.1

압축기 분야 연구동향

차봉준,Cha, Bong-Jun 한국유체기계학회 2006 한국유체기계학회 논문집 Vol.9 No.1

팁 간극 영향으로 인한 원심 압축기 성능특성 시험연구

차봉준,임병준,양수석,이대성,Cha, Bongjun,Lim, Byungjun,Yang, Sooseok,Lee, Daesung 한국유체기계학회 2001 한국유체기계학회 논문집 Vol.4 No.1

The experimental study on the effect of axial clearance between the tip of impeller blades and stationary shroud has been performed. The investigated compressor, which is a part of a small auxiliary power unit engine, consists of a curved inlet, a centrifugal impeller, a channel diffuser and a plenum chamber. It was designed for a total pressure ratio of 4.3 and an efficiency of $77\%$ at design speed of 60,000 rpm. The experiments are carried out in an open-loop centrifugal compressor test rig driven by a turbine. For the four different clearance ratios Cr(clearance/impeller tip width) of 6.25, 10.93, 15.60 and 20.30 percent, the overall performance data are obtained at $97\%,\;90\%$ and $80\%$ of the design speed. The results show the overall pressure ratio decrease of $7.7\%$ and the efficiency loss of $8.7\%$ across the variation of clearance ratio near the design speed. It also indicates that the influence of tip clearance became weaker as the flow rate is reduced and the stable operating range is not significantly influenced by the change of clearance ratio.

한국 현대소설의 생태적 가능성

차봉준(Cha, Bong-Jun) 문학과환경학회 2015 문학과 환경 Vol.14 No.1

This study analyzes Korean modern novels that depict ecological problems and express reflections on them. As in the literature of Europe and the U.S., the ecology motif has become commonplace in Korean literature since the 1970s. Poems started to raise environmental issues from the 1970s but it was only after the 1980s that poets actively created their work with the motif. Meanwhile, narratives joined this trend a bit later; it was from the 1990s that fiction deeply centered on ecology became noticeable. Korean works of modern fiction, however, were published from the mid-1970s, and some had already reached with contemplation the highest level in literature. A Small Ball Shot Up by a Dwarf written by Jo Sehui in 1975 is the most exemplary novel among them. The story depicts the destruction of the environment inevitably caused by the highly industrialized Korean society in the 1970s. At the same time, it is possible to read the story from the literary ecological point of view since it includes a deeper ecological awareness of the confrontation among different classes and extreme isolation. This book accusingly presents the severe reality brought by environmental destruction in Korean society at the time. Likewise, since the story characterizes women who were oppressed and victimized by men, it is also feasible to analyze the story from the viewpoint of ecological feminism. Furthermore, if the reader focuses on the human nature of dominance masked in the confrontation among classes and economic disparity, it is viable to analyze the fiction from the social ecological viewpoint. Thus, A Small Ball Shot Up by a Dwarf can be analyzed on multiple layers from a variety of literary ecological points of view. This study reviews the author’s reflections on ecology implied in the narration of A Small Ball Shot Up by a Dwarf.

김동리 소설에 나타난 수난 모티프의 문학적 수용

차봉준(Cha, Bong-jun) 숭실대학교 한국문학과예술연구소 2015 한국문학과 예술 Vol.16 No.-

이 연구는 김동리의 『사반의십자가』와 『부활』을 중심으로 수난 모티프의 문학적 변용 양상 및 그에 담긴 작가의식을 규명함에 목적을 두었다. 김동리는 서구 기독교의 유입과 그 과정 속에서 불거진 전통과의 불화 등을 다루는 방식으로 기독교와 관련된 다수의 작품을 발표했다. 아울러 복음서를 통해 전해오는 다양한 기록들을 문학적으로 형상화함에도 남다른 관심을 보여준 작가다. 본 연구에서 대상으로 삼은 두 작품도 이러한 경향을 잘 반영하고 있는 작품이다. 이처럼 기독교와 관련한 문제에 유독 관심을 기울이고 있는 이유를 밝히기 위해서는 작가의 생애적 특성, 즉 어릴 적부터 다양한 종교와 사상의 세례를 직 · 간접적으로 받게 된 특수성도 함께 고려되어야 한다. 따라서 본 연구에서는 이에 대한 분석을 시작으로 해서 김동리의 소설이 수난 모티프를 어떤 방식으로 수용하고 변형하고 있는지를 분석하였다. 그리고 이러한 수용과 변형에 내재된 작가의 의도를 밝히는 것에 목표를 두었다. 결론적으로 김동리의 소설은 기독교 근본주의자들과는 다른 관점에서 예수의 신성을 문제 삼았으며, 이를 통해 당대 민족의 현실에 대한 작가의 역사인식이 작품에 구현되어 있음을 확인할 수 있었다. 즉 ‘민족의식’과 ‘인간주의’라는 작가의 문학에 대한 핵심 주제가 수난 모티프를 수용한 작품에도 면면히 흐르고 있는 것이다. This study focuses on finding out aspects of literary transformation of suffering motives and consciousness of writer in The Cross of Shaphane and “Resurrection”. Kim, Dong-Ri published a number of works involved in Christianity dealing with conflict on perspective of Korean traditional custom when Western religion had been imported. Furthermore, he revealed his unique concern to embody various records handed down from the Gospel in literary style. Kim’s two works, The Cross of Shaphane and “Resurrection” which this study explores also have same tendency of his consciousness. For finding the reason why he had given a lot of concerns in the matter of Christianity, this study suggests to explore his personal history, specifically his complex religious and philosophical relations. Therefore, this study firstly examines his history, then how to accept and transform suffering motive into his works. So, it reveals that his intention includes acceptance and transformation of suffering motives. In the conclusion, as the main core of his literature, consciousness of people and humanism indwell on his works that accept suffering motive because he showed up little different perspective of Jesus Christ from Christian fundamentalist, argued Jesus’s divine nature, and embodied his own historical consciousness for comtemporary reality of Korean people in his works.

논문 : 이승우 소설의 대언적 행위에 대한 세 가지 탐색 -『생의 이면』과 『오래된 일기』를 중심으로

차봉준 ( Bong Jun Cha ) 한국문학과종교학회 2010 문학과종교 Vol.15 No.1

S대학 글쓰기 교육의 의사소통역량 효과성 분석

차봉준(Cha Bong-Jun),한윤영(Han Yunyoung) 한국문화융합학회 2018 문화와 융합 Vol.40 No.5

이 논문은 S대학이 교양필수로 개설하고 있는 글쓰기 교과목의 수업 효과성 검증을 통해 해당 교과목이 재학생들의 의사소통역량 함양에 어떠한 영향을 미치는지를 확인함에 목적을 두었다. 특히 S대학의 글쓰기 교과목은 이론 중심으로 구성되어 있는 것이 아니라, 다양한 비교과 활동을 연계하고 있다는 점이 특징이다. 이에 따라 본 논문에서는 S대학 글쓰기 교육의 수업 효과성에 의미 있는 차이를 나타나게 한 원인 분석을 위해 S대학 글쓰기 교육과정의 구성상 특성과 연계 비교과 프로그램의 운영 방식을 먼저 살펴보았다. 그리고 이와 연계하여 수업 효과성을 조사하기 위해 활용한 진단도구에 대한 간략한 소개와 함께 연구방법 및 연구결과를 순차적으로 분석 제시하였다. 특히 의사소통 수업 효과성에 대한 분석은 기본역량과 특수역량의 두 범주로 나누어 제시하였으며, 아울러 계열별 효과성을 비교 검증함으로써 향후 해당 교과목의 개선을 위한 방향과 대안을 모색하는 것으로 연구를 마무리하였다. 본 연구의 결과 S대학의 의사소통의 기본역량 전체평균은 2.14점이었으며, 특수역량 전체평균은 2.80으로 특수역량이 기본역량보다 상대적으로 더 높은 것으로 나타났다. 이러한 분석을 토대로 S대학 글쓰기 교과목의 의사소통역량 효과성을 평가해 볼 때 해당 교과과정은 재학생들의 의사소통 역량증진에 의미 있는 효과를 주는 것으로 해석할 수 있다. 반면 의사소통의 기본역량 중 상대적으로 낮은 효과성을 보인 이해(△M=.25)와 특수역량 중 상대적으로 낮은 효과성을 보인 동기(△M=.15) 부분에 대한 증진방안 마련이 요구된다. 아울러 계열별 효과성 분석 결과, 법학계열의 의사소통 역량 증진이 가장 저조한 것으로 나타났다. 따라서 계열별 특성에 적합한 교수-학습 방법 및 교재개발에 대한 학문적 논의가 요구된다. 그리고 글쓰기 교과가 실용적 측면에서의 직업인을 양성하는 교육목표는 달성하지만, 자아 성찰적 성장을 통해 인성을 함양하는 전인교육의 차원은 반영하고 있지 못한 것으로 판단되는데, 교육 내용인 글쓰기 주제 측면에서도 깊이 있는 고민과 보완이 필요할 것으로 보인다. This paper aims to confirm how the writing courses that is S university requirement classes to students in liberal arts courses affect the students’ communication competency by verifying the effectiveness of those courses. In particular, the writing courses are characterized by rather linking various Extracurricular programs than conducting theory-centered practices. This paper first examines structural uniqueness of the writing courses and operation of extracurricular programs in order to figure out the causes that made meaningful differences in the effectiveness of writing courses. Then, it introduces a brief introduction to the diagnostic tools used to investigate their effectiveness, and explores the research methods and results sequentially. Specifically, the analysis on their effectiveness is divided into two categories: basic competency and special competency. At last, this study is concluded by comparing and verifying the effectiveness to find directions and alternatives for improving the courses in the future. The findings shows that the special competency was relatively higher than the basic one(total average of special competency: 2.80/ total average of basic competency; 2.14). The findings can be interpreted that the curriculum has an effect on students’ communication competency. Meanwhile, the findings require to improve the relatively less effective understanding in basic communication competency(△M=.251) and the relatively less effective motivation in special ones(△M=.147). Furthermore, the singularity is that the law department shows the lowest level of achievement. Therefore, this study firstly suggests that academic discussions on teaching-learning methods and textbook development suitable for each department be required. Second, the writing curriculum should be improved for students‘ self-reflection growth with various topic and composition in order to achieve their multi-layered goals.

논문 : 박상륭 소설의 기독교적 상상력 연구 -「아겔다마」의 성서 모티프 패러디 양상을 중심으로-

차봉준 ( Bong Jun Cha ) 한국문학과종교학회 2007 문학과종교 Vol.12 No.1

This study aims to examine the system of Park Sang-Ryung`s Christian speculation by adopting "Ageldama", one of his early short novels, as a text. This study is meaningful as it provides us with a way to understand Park Sang-Ryung`s all the novels in which various religious speculations are involved. Besides, religious speculations were reflected in the author`s cognition deeper than any other religious speculation from his early novels to latest ones. For this reason, it`s thought that this is a meaningful study. "Ageldama" is a novel in which a biblical motif appears quite clearly among the author`s novels. Therefore, it`s expected that if we thoroughly compare and analyze this novel with a biblical motif, the precedent text, based on the parodic technique, the essence of his Christian speculation, which went trough his literary configuration process, will be specifically found out. The author shows a new understanding of Judas Iscariot who is negatively evaluated in the bible. Different from the Biblical point of view which focuses on Jesus` achievements, Park interprets events and meanings of the corresponding day completely based on Judas`s internal point of view. Also, through such a point of view, it was found that the author has borrowed the Gnostic point of view which has been regarded as a heretic and hasn`t been mentioned in the Bible. Besides, it`s worthy of notice that such a Christian speculation constantly has appeared in his other novels even after "Ageldama".

한국 최초의 대학 ‘崇實’이 한국 문학에 남긴 영향

車奉俊(Cha, Bong-Jun),김미진(토론자) 숭실대학교 한국문학과예술연구소 2009 한국문학과 예술 Vol.3 No.-

이 글은 민족 최초의 대학인 숭실대학교가 건학된 지 111주년을 기념한 학술대회에서 숭실 문학의 지나 온 과정을 되짚어 보고자 하는 의도로 쓰여 졌다. 숭실은 근대화와 일제치하라는 격랑의 역사 속에서 건학한 이후 지금까지 민족적 사명을 감당하기에 결코 나태하지 않았다. 식민지 상황이라는 비극 속에서도 꿋꿋하게 민족의식을 고취시키며 독립운동의 면면에 그 역할을 성실히 감당해 왔다. 또한 애국계몽운동, 농촌진흥, 과학기술의 보급, 한국 근대음악의 발전 등에 뚜렷한 영향을 끼치면서 한국 역사의 중심에 서 있었다. 『숭실학보』, 『숭실문학보』, 『숭실활천』 등의 교지(校紙)를 통해 문학적 성과를 쌓아오던 숭실의 문학이 본격적인 토대를 갖추게 된 것은 80년대를 기점으로 국어국문학과가 창설되고 뒤이어 문예창작학과가 창설되면서부터이다. 이때부터 체계적인 문예교육과 창작교육이 이루어지면서 한국 문단을 이끌어 나갈 신예작가들이 꾸준히 등장하기 시작했는데, 이병렬을 선두로 조기봉, 문재호, 이재홍, 조현, 김태용 등이 이 시기의 주목받는 작가들이다. 이병렬은 군 하사관으로 장기 복무한 병영 생활의 체험, 대학원 시절과 시간강사의 삶으로 이어지는 작가의 체험을 바탕으로 소시민의 일상에 대한 따뜻한 시선을 가진 다수의 작품을 발표하고 있다. 그리고 고인(故人)이 된 조기봉의 경우도 비록 짧은 생애였지만 삶에 대하여, 죽음에 대하여, 그리고 사랑에 대하여 관심을 기울였다. 한편 최근에 와서 문단의 집중적인 조명을 받기 시작한 작가로 조현과 김태용을 빼놓을 수 없다. 2008년 〈동아일보〉 신춘문예로 등단한 조현의 경우는 현대 문명에 대한 지적인 냉소와 유쾌한 비틀기를 통해 현대 사회를 바라보는 통찰력이 매우 날카로운 면모를 보여준다. 그는 현대문명이 직면하고 있는 심각성을 오히려 농담처럼 해소해 나가면서 지금까지의 한국 문학이 보여주지 못했던 독특한 소설세계를 만들어 가고 있다. 또한 2005년 『세계의 문학』으로 등단하고 2008년 ‘한국일보 문학상’을 수상한 김태용의 경우도 ‘언어’라는 매개를 아주 능수능란하게 사용하면서 기존의 서사문학과는 변별되는 자신만의 영역을 구축해 나가고 있음을 확인할 수 있다. 결국 숭실 문학의 미래는 이들 신예작가들에 의해 그 전망을 밝게 내다볼 수 있다. This was written in order to look back over the past of Soongsil literature at a conference of commemorating the 111th anniversary of Soongsil since Soongsil University, Korea-first university was found. Soongsil has never been lazy to fill the national mission up to now since Soongsil was established in the history of modernization and Japanese imperialism. Even in a tragedy of a colony situation, Soongsil has aroused national consciousness and has filled its roles in all sides of the Independence movement. Also, Soongsil stands in the middle of Korean history as Soongsil clearly affected an enlightenment movement, a rural promotion, a spread of science & technology, and a development of Korean modern music. The literature of Soongsil which accumulated the literary performance through a school magazine such as ‘Soongsil Hakbo’, ‘Soongsil Literature’, and ‘Soongsil Hwalcheon’ has arranged the active foundation, after the department of Korean Language and Literature was established in 1980s and then the department of creative writing was opened. As the systematic literature education and creation education has been made from that time, new writers who will lead the Korean literary world started to appear constantly. Lee Byeongryeol, Jo Gibong, Mun Jaeho, Lee Jaehong, Jo Hyeon and Kim Taeyong occupied the attention for that time. Lee Byeongryeol has published many writings with a warm sight on normal citizens’ life based on his army experience as sergeant, the graduate school life, a part-time lecturer experience and the writer’s experience. Also, the decreased Jo Gibong was interested in the life, death and love even though he had a short time of life. Besides, Jo Hyeon and Kim Taeyong have recently started to receive an intensive spotlight in the literary world. Starting to write through a spring literature contest of [DongA Ilbo] in 2008, Jo Hyeon shows very keen insight of looking at the modern society through intelligent smile and pleasant twisting about the modern civilization. He has solved the seriousness of the modern civilization like a joke and has made the unique novel world that the Korean literature hasn’t contain up to now. Also, starting to write through [Literature of the World’ in 2005 and awarding ‘the literature prize of Hankook Ilbo’, Kim Taeyong has implemented his own area distinguished from the existing narrative literature while using the medium of ‘language’ sophisticatedly. After all, the future of Soongsil literature can be brightened by new writers.