Permodelan Numerik Aliran Angin Pada Jalan Antara Bangunan Tinggi Dengan Modifikasi Sudut Datang

Abstract

In fluid dynamics analysis, one of the things to do is to perform numerical modeling validated on the results
of experimentation. In numerical modeling of wind flow there are several forms of modeling used including
RANS, LES, DNS, etc. where the modeling has its own advantages and disadvantages. Among these models,
RANS is a model that has the cheapest computer expense compared to other models so that it has the highest
workability. Therefore, rans method testing (Reynolds Averaged Navier Stokes) was conducted to determine
the capability of turbulence models in checking wind speed contours on the road between 4 simple
symmetrical tall buildings with 0o, 30o, and 45o attack an gles validated with the results of
experimentation. This research was conducted using RANS modeling (Reynolds Averaged Navier Stokes) and
standard turbulence model k-ε and validated using Low Speed Wind Tunnel and PIV (Particle Image
Velocimetry). According to the results of the test, U/Uo wind speed conditions obtained in wind modeling
with RANS and k-ε standards have errors that are still acceptable.