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 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.

압축기 분야 연구동향

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

논문 : 이승우 소설에 나타난 창세 설화의 문학적 변용 -『태초에 유혹이 있었다』를 중심으로

차봉준 ( Bong Jun Cha ) 한국문학과종교학회 2011 문학과종교 Vol.16 No.1

Seung-woo Lee has been recognized as the representative author for Christian world view in literary history in Korea. His literary theme which had its started in very ideological question of ``what is God`` has not escaped from the problem for the author till the present. He has continued in the path of pursuing the original root of literature and psych with the exploration into the origin of the universe and essence and the pursuit of the sanctity which one dares to approach. As a result, throughout his novels, the solemnity and meticulousness of a monk on the path of the seemingly a seeker can be observed. This study focuses on the literary transfiguration of the story of genesis in Seung-woo Lee`s full-length novel, There existed temptations in the beginning. The novel has a new literary interpretation on the first tragic incident, the fall of humankind by the temptations of the snake which led to their banishment from the Eden. Humans were exiled for eternity from ``Eden`` which was a gift from God by violating the prohibiting laws. At the center of the tragedy are the Tree of Knowledge and snake as the crucial players. The author reinterprets the epistemological significance of the Tree of Knowledge, which was the first ever prohibiting rule in the literary perspective in the novel. Furthermore, the novel presents a in-depth interpretation that the fall of humans was not caused by the slyness of the tempter the snake but by the desires inherent in the human psyche more fundamentally. Based on this, the study stresses the importance of restoration of relationship through the once-lost communication with God. Thus, the study intends to more specific analysis on the epistemological significance of the story of genesis and the fundamental issue of human desires, supporting the theological arguments.

『사람의 아들』의 성서(聖書) 모티프 수용(受容)과 기독교적(基督敎的) 상상력(想像力)

차봉준 ( Cha Bong-jun ) 한국어문교육연구회 2008 어문연구(語文硏究) Vol.36 No.2

本 硏究는 李文烈의 『사람의 아들』을 중심으로 韓國 現代小說에서 基督敎 文學의 방향성을 모색함에 目的을 두었다. 그동안 基督敎的 世界觀을 표방한 多數의 작품이 발표되기는 했지만 작가의 思惟體系가 깊지 못한 점, 혹은 지나치게 護敎的 성향으로 흐른 점 등에 의해 긍정적 평가를 받지 못한 것이 사실이다. 그러나 『사람의 아들』의 경우는 基督敎的 想像力에 대한 작가의 省察이 매우 깊이 있게 형상화되었으며, 아울러 기독교가 지닌 문제에 대한 批判과 方向의 提起라는 점에서 기존의 작품들과는 차별되고 있다. 이문열은 聖書의 모티프를 끌어들여서 文字的 解釋에 머물러 있는 죽은 신앙에 대한 懷疑, 현실을 도외시한 거짓 신앙에 대한 反省을 보여준다. 또한 神의 存在에 대한 물음, 바람직한 宗敎像에 대한 작가적 인식의 표출에 이르러서는 靈智主義的 思惟, 實存主義的 認識과 같은 매우 심도 깊은 성찰을 보이고 있다. This study focused on Mun-Yeol Lee’s (Man’s Son( to examine Christian literature in modern Korean novels. There have been several works based on Christian worldview, but they have not received positive evaluation because writers’ thinking systems have not been deep enough or they were too theologically fundamental. However, (Man’s Son( thoroughly reflected the writer’s thoughts based on his Christian imagination and was distinguished from other novels with its criticism of Christianity and suggestions for the future of Christianity. In other words, (Man’s Son( is significant in that it deals with Biblical motifs while presenting how modern Korean novels should adopt the concept of Christian literature in a greater depth. Bringing Biblical motifs to his literature, Mun-Yeol Lee did not simply reconceptualized narrations in the Bible. He shows his reflection of dead religion that is trapped in literary interpretation and false religion that neglects the reality. He also shows a very deep reflection of gnosticist thoughts and existentialist awareness in respect to his questions on God’s existence and views on the ideal form of religion in reality.

최인훈 '춘향뎐'의 패러디 담론과 역사 인식

차봉준(Cha, Bong-Jun) 한국문학회 2010 韓國文學論叢 Vol.56 No.-

본 연구는 최인훈의 단편소설 을 고전 과의 상호텍스트적 관계에서 분석하면서 패러디 담론의 양상과 그것에 함의된 작가의 역사 인식을 파악하는 것에 초점을 맞추었다. 지금까지 최인훈의 소설들은 등단 초기부터 일관되게 유지되어 온 환상적, 관념적 성향의 농후함으로 인해 반사실주의 소설로 거명되어 왔다. 아울러 작가의 세계에 대한 대응 방식도 현실 참여적 태도가 빈약하다는 측면에서 일부의 부정적 평가를 피할 수 없었던 것이 사실이다. 그러나 최인훈은 작가로서의 현실 참여를 내용적 차원이 아닌 ‘방법적 자각’이라는 형식적 차원 에서 구체화시켜 나갔는데, 그 대표적 방식이 패러디 기법이었다. 따라서 필자는 본 연구에서 최인훈이 을 중심으로 의도했던 효과와 의미를 발견하고, 이를 바탕으로 최인훈 소설에서 패러디가 갖는 의미를 작가 개인의 내면 의식 및 시대적 상황 인식에 결부시켜 분석했다.아울러 최인훈 소설이 표방하는 문학의 참여정신이 과연 어떻게 구현되고 있는가, 특히 형식적 실험을 통한 방법적 자각이 두드러진 패러디텍스트에서 작가의 미학적 자의식과 함께 부조리한 당대에 대한 역사인식이 어떤 식으로 강조되어 있는가에 초점을 맞춤으로써 작가가 표방하고 있는 본질적 저항의 실체를 확인하고자 했다. 결과적으로 최인훈의 은 선행텍스트의 서사 담론을 전반적으로 수용하면서도 계획된 차이를 바탕으로 당대에 대한 비판적 역사 인식을 나타내고 있음을 확인할 수 있다. 즉 개개의 인물들이 처한 현실을 ‘어둠’의 상황으로 상징한 것을 시작으로 춘향과 이몽룡의 사랑이 현실적 공간을 벗어난 곳에서 성취되도록 전개한 서사의 후반부는 당대에 대한 비판적 성찰임을 확인할 수 있었다. 따라서 에 나타난 패러디 담론은 부정적 현실에 대한 본질적 저항이라는 작가의 역사 인식을 효과적으로 전달하기 위한 문학적 전략으로 결론내릴 수 있다. This study centered on the analysis of the intertextual relationship between In-hoon Choi’s short story and the classic , to understand the aspect of parodied discourse and the author’s historical perspective implied in the book. In-hoon Choi’s novels have been dubbed as antirealist novels due to imbued fantastical and idealistic tendencies which were persistently maintained from the start of his career. Moreover, the author’s response to the world could not prevent negative assessment by some in that the actualistic attitude was lacking. However, In-hoon Choi specifically reflected the reality an author, by ‘methodical awareness’ not content-wise as a way of formality and the representing method for such way of formality is a parody. Thus in the study focuses on the effects and meanings the author intended for by In-hoon Choi and based on such finding, analyzed the work with the combination of the meanings of parody in his novel with the author’s inner workings and context-awareness of the times. It further set out to investigate how literary spirit was portrayed by In-hoon Choi’s novels while focusing on how his historical perspective on the corruptions of his times, along with his aesthetic self-awareness were stressed in parody texts with distinighuished methodical awareness through cursory experimenets. The study was designed to witness the truth of fundamental resistance the author supported. In conclusion, by In-hoon Choi, adopted preceding text’s narrative discourse overall but at the same time, critical historical perspective on the time with the intended discrepancy. Namely, by symbolizing the reality each character was placed in as “darkness”, the latter part of the novel where' Chunghyang and Monryong Lee’s love becomes actualized outside the realistic realm was the critical reflection of his time. Therefore, it is concluded that parodied discourse in was a literary tool to effective communicate the author’s historical perspective, the fundamental resistance against the pessimistic reality.

정찬 소설의 반문명적 사유와 구원의 가능성

차봉준(Cha, Bong-jun) 우리문학회 2012 우리文學硏究 Vol.0 No.37

정찬은 삶의 근원과 인간의 본성을 욕망과 권력에 얽힌 비극으로 인식하며, 이로부터의 구원을 탐색함에 작가적 역량을 기울여오고 있다. 특히 이 작가가 부정하고 비판하는 권력이란 타자를 대상화하고 타자를 소유하려는 욕망에서 비롯된 것이다. 따라서 정찬의 소설은 이러한 욕망과 권력의 메커니즘을 우리 역사의 비극적 사건 속으로 파고들던가, 아니면 문명이나 자본의 폭력성으로 끌고 들어감으로써 타자의 대상화에 내재한 심각성을 노정한다. 아울러 타자성의 회복과 구원의 가능성 모색에 진력한다. 본 연구는 정찬의 단편소설〈별들의 냄새〉, 〈산다화〉, 〈섬〉에 표상된 근대적 욕망과 권력의 문제성을 작가의 반문명?반자본적 비판 인식에 기초하여 분석했다. 이 세 소설에는 현대 사회가 맹신하고 있는 자본과 문명의 폭력성에 희생당한 각각의 인물들이 생동감 있게 그려짐으로써 작가의 문명과 자본에 대한 비판적 태도가 구체화 되어 있기 때문이다. 이에 덧붙여 대상화된 타자성의 회복과 구원의 가능성 모색을 위해 정찬이 반복적으로 형상화하고 있는 ‘샤먼’으로서의 희생 제의에 주목했으며, 이를 작가의 예술가적 소명의식과 결부시켜 보았다. 끝으로 정찬의 단편들이 삶과 생명의 가치 및 존엄성을 생태적 인식으로 접근하고 있다는 사실에 근거하여, 이 역시 시장 이데올로기와 문명 지상주의에 대한 비판적 성찰의 표상임을 밝히고자 했다. Jung Chan recognizes the root of life and nature of human being as the tragedy involved in desire and power and his writing capability is focused on seeking after redemption of the human from these. He especially disavows and criticizes the power that is a product of the desire to objectify and own other person. Therefore, Jung Chan’s short stories expose the seriousness inherent in the objectification of others by inquiring this mechanism of desire and power in traffic events in our history or in violence of culture or capitalism. Furthermore, he endeavors to restore the identity of other person and find a ways into redemption. This study analyzed the desires in modern times and the problems of power represented in his works, odor of stars, Camellia flower and island based on his anti-culture and anti-capitalism. These stories embody his critical attitude with lifelike-description of each character being sacrificed by the violence of capital and culture in which the modern society has blind faith. In addition, this paper focused on the sacrifice of Shaman that Jung Chan repetitively projects to restore the identity of person being objectified and find the way into redemption and this paper associated this with his artistic vocation. Lastly, we tried to find that Jung Chan’s short stories are the critical study of market ideology and culture supremacy based on the fact that he approaches the value and dignity of life and living from the perspective of ecological recognition.

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".

생애사를 통해 본 백도기 초기 소설의 특질

차봉준(Cha, Bong-jun) 중앙어문학회 2012 語文論集 Vol.51 No.-

Baek Do-Gi is not a writer who has been emblazed as being important writer in the history of Korean literature. That may be because literary projection in Baek Do-Gi’s novels is behind in quality compared to that of writers in his time and he is the writer of Christian religion-oriented novel. However, Baek Do-Gi shows different style like no other Christian novel and this study has significance as he proves the potential of Christian novel in Korea. This paper proposes two approaches to understand Baek Do-Gi’s work. The study on Baek Do-Gi’s novel should be based on his life and background. His novels present strong national consciousness and memory of his father who was willing to become a martyr during the war, is one of mainstays of his novel. In addition, his life story of being a minister after graduating one of most progressive theological schools in Korea should be one of important yardstick in understanding of his novels. Therefore, the present writer studied how such marks of life history, in other words, experiences from childhood to adolescence are reflected on his early novels and based on this, proved that the underlying perception of history and reality-oriented consciousness showed in Baek Do-Gi’s novel are created in a close relationship with his life history. As a result, Baek Do-Gi’s novel has significance in the history of literature as it has both uniqueness of being the potential of Korea’s Christian novel and universality of literature, which is a reaction to the human existence, history and reality. In this paper, the present writer aimed to propose the necessity of studying Baek Do-Gi’s novel by casting light upon the literary significance of his early short stories.