Pedestrian wind comfort plays important role in the urban environment. In our work, we consider a model obtained using the Computational Fluid Dynamics (CFD) around the tall building. Our focus is the Tower of Abu Dhabi Plaza in Nur-Sultan city (Kazakhstan), which will be the tallest building of Central Asia with a height of 382 m. We investigated the effect of the wind velocity for pedestrians solving the incompressible time-dependent Navier-Stokes equations in the deal.II library by the Finite Element Method (FEM). We present numerical simulation results for various scenarios. It has been found that the velocity profile can vary in the domain that creates different pedestrian comfort conditions including the extreme category at places dedicated to the pedestrian walking.

# “Computational modeling of wind effects on a tall building by the finite element method” by Bakdauren Narbayev (Nazarbayev University)

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Hi Bakdauren, Can you explain a little bit more about these obstacles, like trees, and how the affect wind velocity to allow pedestrians to walk?

Hi Lisa!

Thanks for asking such a good question. The wind, after hitting many trees (can be seen as porous media) or other small obstacles, loses its internal energy, which, in turn, affects final velocity.

Regarding the second part of the question, in [1], it shows a table with comfort wind categories, which provides a range of wind velocities for the usual states of humans such as sitting, standing, walking, etc. These categories are good indicators to see the tolerated velocities for pedestrians.

Thanks!

Hi Bakauren,

Nice poster! Just one thing I don’t quite follow, what do you mean by “the incoming flow have a parabolic structure”?

Also, since the fluid is incomprehensible (I guess no creation of shock waves or any non-smooth features then), have you tried using some spectral methods?

Thanks!

Hi Hengrui Zhu!

Thanks for both questions.

Yeah, the wording “parabolic structure” might be not rigorous enough. So I am sorry for that. In the numerical examples, the incoming velocity is the value of the velocity at the left boundary (vertical). The incoming velocity in the x-direction is a function of y (height), i.e. const_1*y*(const_2 – y). Incoming velocity in the y-direction is zero.

Regarding the second question, it will be interesting to apply some spectral methods. We might do it in the future. Thanks for the suggestion!