Essays about: "Modal and non-Modal Stability"

Found 2 essays containing the words Modal and non-Modal Stability.

1. 1. Linear stability Analysis of Viscoelastic Flows

   University essay from KTH/Mekanik

   Author : Mengqi Zhang; [2012]
   Keywords : ;

   Abstract : The goal of present work is to investigate the instability of jet ow, mixing layer and Poiseuille ow of viscoelastic uids. According to Boeta et al: [4], small elastic eect in Kolmogorov ow will result in increasing critical Re for hydrodynamic instability, however, at high elasticity a new instability of elastic nature occurs even at vanishing Re. READ MORE

3. 2. Instabilities in Pulsating Pipe Flow of Shear-Thinning and Shear-Thickening Fluids

   University essay from Mekanisk värmeteori och strömningslära; Tekniska högskolan

   Author : Sasan Sadrizadeh; [2012]
   Keywords : Stability; Pulsatile pipe; Transient Growth; Floquet Multiplier; Modal and non-Modal Stability;

   Abstract : In this study, we have considered the modal and non-modal stability of fluids with shear-dependent viscosity flowing in a rigid straight pipe. A second order finite-difference code is used for the simulation of pipe flow in the cylindrical coordinate system. The Carreau-Yasuda model where the rheological parameters vary in the range of 0. READ MORE