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sisvu:description 2201 Osnove turbostrojeva Semestar Predavanja + vježbe Ukupno ECTS koeficjent 6 3 + 2 5 Nositelj kolegija: Branimir Matijašević Cilj kolegija: Upoznavanje s različitim tipovima turbostrojeva i njihovim karakteristikama. Razumijevanje energetske pretvorbe kod različitih tipova dvodimenzionalnih rešetki turbostrojeva. Upoznavanje s rezultatima eksperimentalnih istraživanja na različitim rešetkama i odgovarajućim korelacijama. Razumijevanje osnovnih pojmova (trokuti brzina, reaktivnost stupnja, opterećenje, projektni i vanprojektni režim, itd.) i pojava (pumpanje, zagušenje, itd.). Upoznavanje s trodimenzionalnim strujanjem kod aksijalnih turbostrojeva. Opis kolegija: Uvod: definicija, performanse i geometrijske karakteristike različitih tipova turbostrojeva. Osnovne jednadžbe termodinamike i mehanike fluida, iskoristivost. Dvodimenzionalne rešetke: karakteristike, rezultati ispitivanja i korelacije. Dvodimenzionalna teorija aksijalnih turbina: reaktivnost i njen utjecaj na iskoristivost, faktor povrata topline. Dvodimenzionalna teorija aksijalnih kompresora, pumpi i ventilatora: reaktivost i opterećenje, pumpanje. Trodimenzionalno strujanje u aksijalnim turbostrojevima. Centrifugalne pumpe, puhala i kompresori: zagušenje. Vodne i turbine na vjetar. Na vježbama se paralelno s predavanjima rješavaju numerički primjeri. Nastavne metode: Predavanja, vježbe Ispit: Pismeni, usmeni Preduvjeti za ispit: Položeni kolegiji Termodinamika I. i Mehanika fluida I. Napomene: (hr)
sisvu:description 2201 Basics in Turbomachines Semester Lecture + exercises Total ECTS coefficient 6 3 + 2 5 Lecturer: Branimir Matijašević Objectives of the course: Introduction to various types of turbomachines and their characteristics. Understanding of energy conversion at various types of two-dimensional cascades of turbomachines. Introduction to test results on various cascades and with corresponding correlations. Understanding of basic concepts (velocity triangles, stage reaction, loading, reheat factor, on and off-design performance, etc.) and phenomena (stability, choking, etc.). Introduction to three-dimensional flow in axial turbomachines. Description of the course: Introduction: definition, performances and geometry characteristics of various types of turbomachines. Basic equations of thermodynamics and fluid mechanics, efficiency. Two-dimensional cascades: performances, test results and correlations. Two-dimensional theory of axial-flow turbines: stage reaction and its effect on efficiency. Two-dimensional theory of axial-flow compressors, pumps and fans: stage reaction and loading, stability, reheat factor. Three-dimensional flows in axial turbomachines. Centrifugal pumps, fans and compressors: choking. Hydraulic and wind turbines.Exercises in numerical examples are solved parallel with lectures. Teaching methods: lectures, exercises Examination methods: written, oral Prerequisites: Passed courses Thermodynamics I. and Fluid mechanics I. Remarks: (en)
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