43 research outputs found
[κ°κ΅ 70μ£Όλ κΈ°λ ] λμκ΄ μ μν κ°μ΅ λ° 70λ μ¬ λ°κ°
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μ μΌνμΌλ‘ λμκ΄ κ°κ΄ μ΄ν 70λ
κ°μ μμ¬λ₯Ό μ 리νμ¬ νλμ μ νκΈ° μν΄ γμμΈλνκ΅ λμκ΄ 70λ
μ¬γ λ°κ°λ μΆμ§νμλ€. μ΄λ² κ°κ΅ 70μ£Όλ
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μ¬ λ°κ°μ λν μ λ°μ μΈ μΆμ§ κ³Όμ μ΄ ν₯ν λμκ΄ μμ¬μ μμ΄ μ€μν κΈ°λ‘μ΄ λκΈ° λλ¬Έμ κ·Έ μ€λΉκ³Όμ μ λ€μκ³Ό κ°μ΄ μ 리νκ³ μ νλ€
κ΅λ―Όκ±΄κ°λ³΄νκ³΅λ¨ μ΄μκ²½ν(The empirical review of national health insurance in Korea)
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ΈνΈ : μ λΆκ°νλ¬Όλ²νΈ 11-1051000-000577-01λ³Έ λ³΄κ³ μλ μλ¬Έλ³΄κ³ μλ₯Ό μΆμ½νμ¬ μμ±ν κ²μΌλ‘ ꡬ체μ μΈ λ΄μ©μ μλ¬Έλ³΄κ³ μλ₯Ό μ°Έκ³ νμκΈ° λ°λλλ€
A Study on Abstract Image Pattern System taking advantage of the Principle of Image Segmentation -Focused on Generation of Digital Tapestry-
Chimera grid
μ΄μμ μμμ λΉννλ λ‘μΌ λ³Έμ²΄μ 2κ°μ λΆμ€ν°κ° λΆμ°©λμ΄ μλ 3λ¨ν λ‘μΌ μ£Όμμ μ λμ₯μ μμΉμ μΌλ‘ ν΄μν μ μλ μμΆμ± Euler μ½λλ₯Ό κ°λ°νμλ€. λν μ λμ₯ ν΄μκ²°κ³Όλ‘ 3λ¨ν λ‘μΌμ 곡λ ₯ νΉμ±μ°κ΅¬λ₯Ό μννμλ€ κ³μ° 격μκ³ νμ± λ°©λ²μ overlapping 격μκ΅¬μ± κΈ°λ² μ€μ νλμΈ Chimera κΈ°λ²μ μ¬μ©νμλ€. μ΄ λ°©λ²μ 3λ¨ν λ‘μΌκ³Ό κ°μ 볡μ‘ν 물체 μ£Όμλ μλμ΄λμ νλ 물체 μ£Όμμ μμ§μ 격μλ₯Ό μ»μ μ μλ€λ μ₯μ μ΄ μλ€. κ° κ²©μκ³ μ¬μ΄μ μ 보 μ λ¬μ μ μ©μ΄ κ°λ¨νλ©΄μλ κ°κ±΄ν trilinear μ½κ° λ°©λ²μ μ¬μ©νμλ€. κ³΅κ° μ΄μ°νμ λ°©λ²μΌλ‘λ λλν 물체 μ£Όμμ μκΈ°λ κ°ν 좩격νλ₯Ό μ§λμμ΄ μ ν¬μ°©ν μ μλ AUSMPW+ κΈ°λ²μ μ΄μ©νμ¬ μ ν체μ λ²μ μ μ©νμκ³ οΌ MUSCL κΈ°λ²μ Minmod μ νμμ ν¨κ» μ¬μ©νμ¬ κ³ μ°¨μ κ³΅κ° μ νλλ₯Ό μ»μλ€. μμ λΆλΆμ νλ ¬ ꡬμ±μ van Leerκ° μ μν FVS ν΄λ²μ νλμ€ μ νν νλ ¬μ μ¬μ©νμ¬ κ΅¬μ±νμλ€. λν μμ λΆλΆμ κ³μ°μ μν΄ Beam-Warmingμ AF κΈ°λ²μ΄ μ¬μ©λμλ€. KSR-IIIμ H-2 λ‘μΌμ λν΄ Chimera 격μκ³λ₯Ό ꡬμ±νκ³ κ°λ°ν μ½λλ₯Ό μ μ©νμ¬ λ‘μΌμ£Όμμ μ λμ₯μ μ λ 쑰건μ λ³νμμΌ ν΄μμ μννμλ€. λ μ΄ ν΄μμ λ°νμΌλ‘ νμ¬ λ‘μΌλͺ¨λΈλ€μ 곡λ ₯κ³μλ₯Ό κ³μ°νμκ³ , 맀κ°λ³μμ λ°λ₯Έ 곡λ ₯ κ³μμ λ³ν κ²½ν₯μ μ΄ν΄λ³΄μλ€.The three-dimensional compressible Euler code was developed for the analysis of the supersonic flow field around 3-stage rocket system with boosters. Numerical simulations were performed at various angles of attack and Mach numbers. In order to analyze these flow fields, an overlapped grid system, called '01imera grid system', is applied to the 3-dimensional EuJer equation. This grid system is quite efficient for the analysis of flows around complex geometry and flows under relative solid body motion, so is very appropriate for the present research objects. Communications between overlapped grids is achieved by the trilinear interpolation method which is robust and easily applicable to any code. AUSMPW+ scheme is used for spatial discretization, and MUSCL interpolation with Minmod limiter is applied for a higher order spatial accuracy. The split flux Jacobian of van Leer's Flux Vector Splitting(FVS) algorithm is used for the matrix computation of the implicit part. Also Beam-Warming's approximate factorization(AF) scheme is used for the efficient calcuJation of the implicit part. Chimera grid scheme was applied to KSR-III and H-2 geometry under various flow conditions. Aerodynamic coefficients and their characteristics were examined from the numerical results.OAIID:oai:osos.snu.ac.kr:snu2000-01/102/0000004648/1SEQ:1PERF_CD:SNU2000-01EVAL_ITEM_CD:102USER_ID:0000004648ADJUST_YN:NEMP_ID:A001138DEPT_CD:446CITE_RATE:0FILENAME:Chimera_격μκΈ°λ²μ_μ΄μ©ν_3λ¨ν_λ‘μΌμ_λΉμ μ±_μ λ_ν΄μ.pdfDEPT_NM:κΈ°κ³ν곡곡νλΆEMAIL:[email protected]: