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Termodinamička analiza akumulacije topline u latentnom spremniku
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Anica Trp U radu je analiziran fizikalni proces nestacionarne izmjene topline unutar latentnog spremnika. Postavljeni je matematički model, kojeg čine diferencijalne jednadžbe strujanja i prijelaza topline fluida, diferencijalna jednadžba provođenja topline kroz stijenku te diferencijalna entalpijska jednadžba akumulatora topline, uz definirane početne i rubne uvjete, diskretiziran primjenom numeričke metode kontrolnih volumena, a dobiveni su sustavi algebarskih jednadžbi riješeni...
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Termodinamička analiza i optimizacija rada brodskoga pogonskoga sporohodnog dizelskog motora s korištenjem otpadne topline
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Mirko Grljušić Cijene goriva nezaustavljivo rastu, a ekološki problemi vezano za izgaranje fosilnih goriva postaju alarmantni. S druge strane, čak i najefikasniji stroj današnjice, sporohodni dizelski motor, 50% energije sadržane u gorivu otpušta u atmosferu u obliku topline sadržane u ispušnim plinovima i rashladnoj vodi. Cilj ovog rada je istražiti kogeneracijsko (CHP) postrojenje koje bi ovu izgubljenu energiju niske temperature, vratilo u energetsko postrojenje tankera za prijevoz nafte od...
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Termodinamička analiza procesa izgaranja u dizelskom motoru
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Maro Jelić U ovom radu razmatran je novi model analize radne sposobnosti radnog medija tijekom procesa izgaranja u cilindru dizelskog motora. Model sadržava metodu rastavljanja termodinamičkog procesa izgaranja koja se svodi na zamjenu jednoga realnog procesa s njemu dva potpuno jednaka fiktivna procesa, a ti fiktivni procesi jednaki su realnom procesu po tome što se zbiva jednaka izmjena radne tvari uz jednaku izmjenu vanjskih utjecaja.
Cilj je novom modelu otkrivanje mjesta i uzroka destrukcije...
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The nature of fictional testimony and its role in reaching, fulfilling and promoting our epistemic aims and values
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Iris Vidmar In this dissertation I analyze the problem of cognitive value of literary works and literary practice. My starting point is the symmetry that I claim exists between cognitive values traditionally ascribed to literary works and cognitive states that contemporary epistemology finds valuable and desirable. In that sense, the backbone of dissertation is bringing together of the literary cognitivism (the view according to which literature and literary works are cognitively valuable) and the so...
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Three-Dimensional Nonlinear Dynamic Time History Analysis of Seismic Site and Structure Response
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Saša Mitrović In the present thesis a three-dimensional finite element model for non-linear dynamic analysis of
(1) seismic site and structure response and (2) soil-structure interaction with contact discontinuity
is proposed and discussed. Accordingly, two numerical studies are presented, each consisting
of a series of analyses of a coupled structure - foundation - soil system.
In the first study a series of numerical examples are presented which include modelling of a
reinforced concrete frame with...
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Three-dimensional finite element formulation for concrete failure at high-energy impact loadings
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Vanja Travaš In the present thesis a three-dimensional finite element formulation for concrete failure under high-energy impact loadings is presented. The formulation is based on the theoretical framework of continuum mechanics and irreversible thermodynamics. In order to obtain a non-unilateral contact/impact description, the spatial regions occupied by the bodies under collision are discretized with linear tetrahedral elements. The temporal discretization is traditionally conducted by finite difference...
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Tijek i prognoza multiple skleroze u Hrvatskoj
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Dražen Stojanović Cilj istraživanja: Ispitati prognostičke čimbenike multiple skleroze (MS) u Hrvatskoj, te doprinjeti novim spoznajama, epidemiologiji i klinici MS ; ocijeniti uporabljivost određenog računalnog programa. Plan istraživanja: Retrospektivna analiza povijesti umrlih MS bolesnika pomoću računalne baze EDMUS (European Database for Multiple Sclerosis). Okvir istraživanja: Registar MS Hrvatske pri Klinici za neurologiju Medicinskog fakulteta u Rijeci, 1943-1998. Ispitanici: Uzorak od 124...
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Time-dependent deformation of flysch rock mass
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Mirko Grošić mass deformations and their influences on construction are observed during construction and even during service period. Observations of reinforced cuts along the Adriatic motorway near the City of Rijeka, Croatia, were conducted over a time period of three to seven years during construction phase and service period. Measured displacements reached significant magnitudes during the service period (up to 50% of displacements of construction phase) as a consequence of the time dependent...
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