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3 Prace Naukowe Instytutu Telekomunikacji i Akustyki Politechniki Wrocławskiej. Konferencje

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Modelowanie pola akustycznego źródła powierzchniowego

Jaroch A., Rabiega M.

Prace Naukowe Instytutu Telekomunikacji i Akustyki Politechniki Wrocławskiej. Konferencje

2003

Vol. 84, nr 28

121-124

Theoretical approach to modeling multi-source plant is presented in the paper. The output value of the model is equivalent sound level, averaged within a given time. General assumptions and rules adopted in the model were described. The rules must take into account complexity of the source movement and functioning. The relations between the imission relevant sound power level and measurable values are determine.

Implementacja modelu źródła powierzchniowego w przestrzeni zurbanizowanej

Jaroch A., Rabiega M.

Prace Naukowe Instytutu Telekomunikacji i Akustyki Politechniki Wrocławskiej. Konferencje

2003

Vol. 84, nr 28

125-128

This paper deals with the distribution of acoustical field emitted by multi-source plant. As an example the bus depot was considered. Many sound sources operating over a large area, generate sound of level varying in time. Within the area of the depot and in its vicinity there are some buildings that play important role of acoustic barriers. Examples of calculation by means of developed model are presented.

Model do wyznaczania poziomu hałasu samolotów podczas kołowania

Rabiega M., Tarczyński R., Jaroch A.

Prace Naukowe Instytutu Telekomunikacji i Akustyki Politechniki Wrocławskiej. Konferencje

2001

Vol. 83, nr 27

237-242

This paper aims at presenting calculating model for predicting long-term equivalent sound level near the airfields. In the vicinity of airports noise is affected not only by landing and taking off aircrafts but also by noisy aircraft ground operations. They are related to run up procedures, taxiing of an aircraft from stand or sleeve to the beginning of the runway and after landing from the runway to the stand. Also noise generated by auxiliary power units (APU) or other external generators used to maintain air-conditioning systems and power electrical equipment during the plane's stop over between flights has influence on the equivalent level. An aircraft is represented by a single point source described by immission relevant sound power level, directivity characteristic, speed of moving along taxiway and time of run-up operation. Noise generated by APU is incorporated into the model as a point source located at stand position. Input data were collected for passenger aircraft at the Wroclaw airport under normal working conditions. The computer program was developed