Zobrazeno 1 - 10
of 200
pro vyhledávání: '"FRIGAARD, IAN A."'
Wormlike micellar solutions formed by long-chained zwitterionic surfactants show gel-like rheology at room temperature and have recently been found to exhibit other complex and interesting rheological features. We study the dynamics of these wormlike
Externí odkaz:
http://arxiv.org/abs/2401.12102
The passage of single air bubbles through the horizontal interface between miscible viscoplastic and Newtonian fluids, considering various combinations of densities and viscosities for the fluid layers, is studied computationally. The primary focus i
Externí odkaz:
http://arxiv.org/abs/2310.17791
Squeeze cementing is a process used to repair leaking oil and gas wells, in which a cement slurry is driven under pressure to fill an uneven leakage channel. This results in a Hele-Shaw type flow problem involving a yield stress fluid. We solve the f
Externí odkaz:
http://arxiv.org/abs/2303.11043
We present an experimental investigation of turbulent drag reduction with flexible and rigid polymer solutions. The flexible polymer is partially hydrolyzed polyacrylamide (HPAM) and the rigid polymer is xanthan gum (XG). The experiments are carried
Externí odkaz:
http://arxiv.org/abs/2210.10319
Publikováno v:
J. Non. Newt. Fluid Mech. 293 (2021) 104570
Turbulent flows of viscoplastic fluids at high Reynolds numbers have been investigated recently with direct numerical simulations (DNS) but experimental results have been limited. For this reason, we carry out an experimental study of fully turbulent
Externí odkaz:
http://arxiv.org/abs/2207.08404
Autor:
Hajieghrary, Omid1 (AUTHOR) omid.eghrary@alumni.ubc.ca, Frigaard, Ian1,2 (AUTHOR) frigaard@mail.ubc.ca
Publikováno v:
Energies (19961073). Oct2024, Vol. 17 Issue 19, p4943. 19p.
Long-chained, viscoelastic surfactant solutions (VES) have been widely employed in the oil and gas industry, particularly in hydraulic fracturing and gravel-packing operations, where turbulence is commonly reached due to high pumping rates. With this
Externí odkaz:
http://arxiv.org/abs/2110.07086
We use computational methods to determine the minimal yield-stress required in order to hold static a buoyant bubble in a yield-stress liquid. The static limit is governed by the bubble shape, the dimensionless surface tension ($\gamma$) and the rati
Externí odkaz:
http://arxiv.org/abs/2107.07580
Autor:
Chaparian, Emad, Frigaard, Ian A.
Viscoplastic fluids can hold bubbles/particles stationary by balancing the buoyancy stress with the yield stress. In the present study, we investigate a suspension of bubbles in a yield-stress fluid. More precisely, we compute how much the gas fracti
Externí odkaz:
http://arxiv.org/abs/2106.04440
Publikováno v:
Journal of Rheology 65, 1065 (2021)
Long-chained surfactant solutions have found widespread use in the oil and gas industry due to a host of attractive properties. In this paper, we characterize one such commercially used viscoelastic surfactant that forms a wormlike micellar gel at ro
Externí odkaz:
http://arxiv.org/abs/2104.04093