var body = document.body; body.className += " u-body u-xl-mode"; body.style.cssText += " "; var dataBg = ''; if (dataBg) { body.setAttribute('data-bg', dataBg); } We have expertise on computation of Turbulent flow Turbulent combustion Thermal radiation Two phase flow Heat and mass transfer Fires Gas Explosion Flow, heat transfer and combustion in porous media Etc. 174