Računalna simulacija strujanja kroz stropni ventilacijski difuzor

undergraduate thesis

• Title (english): Numerical simulation of air flow troughceiling ventilation diffuser
• Author: Juraj Čukelj
• Mentor: Severino Krizmanić (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2020-02-27, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering; Process Energy Engineering

Abstract

Zračni sustavi klimatizacije danas se koriste za gotovo svaku modernu poslovnu ili građevinu druge namjene u kojoj je predviđen smještaj većeg broje ljudi. Kako bi se održavali traženi uvjeti unutar prostorije, u nju je potrebno je ubacivati dobavni zrak i odvoditi istrošen zrak.
Zrak se u prostoriju ubacuje na različite načine, a ovisno o načinu ubacivanja zraka dobiva se različito strujanje zraka unutar prostorije. Način strujanja zraka unutar prostorije značajno utječe na toplinsku ugodnost osoba unutar zone boravka.
U ovome radu su numeričkim simulacijama proračunata strujanja zraka unutar prostorije zadanih dimenzija. Simulacije su provedene primjenom metode konačnih volumena, pomoću OpenFOAM biblioteke računalnih programa. Dobiveni rezultati uspoređeni su s rezultatima eksperimenta. Numeričke simulacije izvedene su za više inačica geometrije prostorije i istrujnog difuzora, dok su za usporedbu s rezultatima eksperimenta korištene dvije.

Abstract (english)

Air-conditioning systems are used for almost every modern office or other purpose building that accommodates a larger number of people. In order to maintain the required conditions inside the room, it is necessary to inject supply air and drain out exhaust air from the room.
Air can be injected into the room in different ways, resulting with airflow of different properties. The air flow properties inside the room significantly affect thermal comfort of people inside the residence zone.
In this work, numerical simulations were used for the calculation of flow properties inside a room of prescribed geometry. Simulations were performed by applying Finite Volume Method using OpenFOAM software package. The obtained results are compared with the results of experiments. Simulations were performed for multiple variants of room and exhaust diffuser geometry, two of which were used in comparisons with experimental results.

• Keywords: klimatizacija; računalna dinamika fluida; toplinska ugodnost; OpenFOAM
• Keywords (english): Air Conditioning; Computational Fluid Dynamics; Thermal Comfort; OpenFOAM
• Language: croatian
• URN:NBN: urn:nbn:hr:235:214445
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: undergraduate; Academic / professional title: sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva (sveučilišni/a prvostupnik/ prvostupnica (baccalaureus/baccalaurea) inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2020-02-24 13:34:52