Need a book? Engineering books recommendations...

Re: SANDSTORM

• To: seaint(--nospam--at)seaint.org
• Subject: Re: SANDSTORM
• From: "Robert Kazanjy" <rkazanjy(--nospam--at)gmail.com>
• Date: Mon, 20 Feb 2006 20:44:34 -0800

Stefan-

By your numbers, the density of the air is increased by ~5%.

The  uncertainty in the chosen wind speed will have much more effect than a slight variation in fluid density.

Additionally a 35F deg change in air temp will have more density effect than the sand suspended in the air.

cheers
Bob

On 2/20/06, Stefan Reumers <Reumers.S(--nospam--at)ellimetal.com> wrote:

For a project in Saudi-Arabia, I need to take into account the effect of sandstorms on a number of big aluminium silos.

The dust content of the sandstorm is defined as 0.065 kg/m3.

Is there any code or book that describes what to do in this case ?

I made the calculations as follows, but I do not know if this is the correct way.

Pressure coefficient silo : cw = 0.60

Density of the air : ro = 1.25 kg/m3

Dust content air : d = 0.065 kg/m3

Impact factor sand : Is = 2.0 (taken arbitrary)

Combined pressure coefficient air/sand :

Cc = cw . (ro + d . Is) / ro = 0.66