Naršyti pagal autorių "Gabrielaitienė, Irena"
Dabar rodomi įrašai 1-20 iš 21
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Analysis of fluid flow and heat transfer in district heating pipelines using the finite element method
Gabrielaitienė, Irena; Sundén, Bengt; Kačianauskas, Rimantas (Seventh International Conference on Advanced Computational Methods in Heat Transfer : Heat Transfer VII : 22-24 April 2002, Halkidiki, Greece, 2002)The finite element method is applied to solve coupled steady-state fluid flow and heat transfer problems in insulated pipes of district heating networks. the main advantage of the finite element method involved here is the ... -
Analysis of Heat Losses in Multilayered Structures of a Pipeline Using Finite Element Method
Gabrielaitienė, Irena; Kačianauskas, Rimantas; Sundén, Bengt (14th Nordic seminar on computational mechanics : proceedings, Lund, 19-20 October, 2001, 2001) -
Application of document management technology instead of manual approaches in straightforward cad applications
Gabrielaitis, Linas; Gabrielaitienė, Irena (Engineering Graphics BALTGRAF-11 : proceedings of the Eleventh International Conference. Tallinn, Estonia, June 9-10, 2011, 2011)For years, small and mediums sized enterprises (the main users of AutoCAD LT) have relied on manual approaches and inefficient document processes to manage their important CAD drawings. Manual approaches in document ... -
Application of the Finite Element Method for Modelling of District Heating Network
Gabrielaitienė, Irena; Kačianauskas, Rimantas; Sunden, Bengt (Information and Communication Technology (ICT) in the Practice of Building and Civil Engineering : Symposium Report : 2nd Worldwide ECCE Symposium 6-8 June, 2001, Finland, 2001) -
Dynamic modeling of the thermal performance of district heating pipelines
Gabrielaitienė, Irena; Sundén, Bengt; Kačianauskas, Rimantas; Bohm, Benny (Advances in Heat Transfer Engineering : proceedings of the Fourth Baltic Heat Transfer Conference, August 25-27, 2003 Kaunas, Lithuania, 2003)The main objective of this paper is to develop a proven model which allows the study of the non-stationary effects in district heating systems, which are associated with time lag between heat generation and the final ... -
Dynamic temperature simulation in district heating systems in Denmark regarding pronounced transient behaviour
Gabrielaitienė, Irena; Bøhm, Benny; Sundén, Bengt (Journal of civil engineering and management, 2011)A dynamic performance of district heating systems was analysed with an emphasis on temperature profile distortion throughout a heating system network. Therefore, a modelling approach (the so-called node method) developed ... -
Geometrical modelling of 3D fittings in engineering systems
Gabrielaitienė, Irena; Gabrielaitis, Linas (Engineering Graphics BALTGRAF-11 : proceedings of the Eleventh International Conference. Tallinn, Estonia, June 9-10, 2011, 2011)Geometrical modelling of 3D fittings was performed in an engineering system of a pipe network. This work considers 3D representation of a pipe network of a district heating system, which enables application of detailed ... -
Geometrinio modeliavimo principai ANSYS sistemoje
Gabrielaitienė, Irena (Inžinerinė ir kompiuterinė grafika : konferencijos pranešimų medžiaga, [2000 m. birželio 6 d., Kaunas], 2000)An ANSYS analysis consists of three phases: preprocessing, solution and postprocessing, Model data (including solid model and finite element model geometry, materials, etc.) are store by central database. -
MagiCAD- nauja programinė įranga inžinerinių tinklų projektuotojams
Aksomitas, Gintaris; Gabrielaitienė, Irena (Statyba ir architektūra : mokslo ir praktikos žurnalas, 2000) -
Modelling of aqueous foam flow for developing energy-efficient heat exchanger applications
Gabrielaitienė, Irena; Gylys, Jonas (8th International Conference “Environmental Engineering” (ICEE-2011), 2011)Two-phase aqueous foam flow was modelled for developing energy-efficient heat exchangers. Such heat exchangers can provide low consumption of energy resources due to enhanced heat transfer rates. In this study enhancement ... -
Nesusieto termohidraulinio baigtinių elementų modelio panaudojimas šilumos tiekimo tinklų skaičiavimuose
Gabrielaitienė, Irena (Antrosios Lietuvos jaunųjų mokslininkų konferencijos "Lietuva be mokslo - Lietuva be ateities", įvykusios Vilniuje 1999 m. spalio 18-22 d., medžiaga : fizika ir fizinė kompiuterija, chemija ir bioinžinerija, matematika, informatika, skaičiuojamoji mechanika, 1999)Straipsnyje nagrinėjamas baigtinių elementų metodo taikymas vamzdynų hidrauliniams ir šiluminiams uždaviniams spręsti. Šie uždaviniai yra pakankamai sudėtingi, neturintys tiesioginio sprendimo. Inžinerinėje praktikoje jie ... -
Numerical simulation of a district heating system with emphases on transient temperature behaviour
Gabrielaitienė, Irena (8th International Conference "Environmental Engineering", May 19-20, 2011, Vilnius, Lithuania: selected papers. Vol. 2. Water Engineering. Energy for Building, 2011)Numerical simulation of a district heating system was performed with emphases on transient temperature behaviour. The distortion of transient temperature throughout a heating system network was simulated using modelling ... -
Numerical simulation of a district heating system with emphases on transient temperature behaviour
Gabrielaitienė, Irena (8th International Conference "Environmental Engineering", May 19-20, 2011, Vilnius, Lithuania CD, 2011)Numerical simulation of a district heating system was performed with emphases on transient temperature behaviour. The distortion of transient temperature throughout a heating system network was simulated using modelling ... -
Numerical simulation of a district heating system with emphases on transient temperature behaviour
Gabrielaitienė, Irena (8th International Conference “Environmental Engineering” (ICEE-2011), 2011)Numerical simulation of a district heating system was performed with emphases on transient temperature behaviour. The distortion of transient temperature throughout a heating system network was simulated using modelling approach ... -
Prediction of temperature propagation in a pipe-network employing turbulence modelling
Gabrielaitienė, Irena; Bohm, Benny; Sundén, Bengt (Advances in Heat Transfer: proceedings of the Baltic Heat Transfer Conference, September 19-21, 2007 / St. Petersburg State Polytechnical University (Russia), Lund Institute of Technology (Sweden), 2007)Transient temperature propagation in turbulent flow has been investigated for a pipe-network of a district heating system. For such modelling, simplified approaches (assuming slug flow) were previously used, and their ... -
Šilumos tinklų modeliavimas baigtinių elementų metodu
Gabrielaitienė, Irena (2003) -
Šilumos tinklų parametrų kompleksinė įvertinimo technologija
Gabrielaitienė, Irena (Matematika ir informatika. Chemija ir bioinžinerija. Fizika ir fizinė kompiuterija : trečiosios Lietuvos jaunųjų mokslininkų konferencijos "Lietuva be mokslo-Lietuva be ateities", įvykusios Vilniuje 2000 m. balandžio 26-spalio 16 d., medžiaga, 2000) -
The modelling of district heating networks by the finite element method
Gabrielaitienė, Irena (2003) -
Thermo-hydraulic finite element modelling of district heating network bY the uncoupled approach
Gabrielaitienė, Irena; Kačianauskas, Rimantas; Sundén, Bengt (Journal of civil engineering and management, 2003)The modelling of uncoupled fluid flow and heat transfer problems of a district heating network using the finite element method (FEM) is presented. Since the standard thermo-hydraulic pipe elements cannot be directly used ... -
Алгоритм анализа компьютерного проектирования
Gabrielaitienė, Irena (Inžinerinė ir kompiuterinė grafika = Engineering and computer graphics : straipsnių rinkinys, [kn.] 4, 1998)