An Experimental Study of Chemical Wave Propagation

Synthesis of Cyclodextrin-Grafted Chitosan: From Laboratory Scale to Pilot Scale

“…The power law exponent, n , corresponds to the empirical and theoretical considerations. The common value of n is 0 when the equal complete mixing time is chosen as a scale-up objective, 1/2 for equal surface motion, 2/3 for equal mass transfer, 3/4 for solid suspension, and 1 for equal liquid motion. , …”

“…Presuming an excellent conducting metal wall and a high constant velocity of heating media in both small and large reactors, the overall heat transfer coefficient ( U o ) primarily depended on the heat transfer coefficient of the fluid in a reactor ( h i ). For forced convection heat transfer, which carried energy from the surface of the reactor to the moving fluid, the agitator diameter and speed were considered. The Nusselt–Reynolds–Prandtl correlation with a wall viscosities correction for heat transfer in a stirred tank , is defined as where Practically, the viscosity term is often neglected. The geometric similarity was typically assumed, and the geometric ratio term can therefore be omitted.…”

“…Presuming an excellent conducting metal wall and a high constant velocity of heating media in both small and large reactors, the overall heat transfer coefficient ( U o ) primarily depended on the heat transfer coefficient of the fluid in a reactor ( h i ). 1 U normalo = r normalo h i r i + A o ln ( r normalo / r normali ) 2 π italiclk + 1 h normalo For forced convection heat transfer, which carried energy from the surface of the reactor to the moving fluid, the agitator diameter and speed were considered. The Nusselt–Reynolds–Prandtl correlation with a wall viscosities correction for heat transfer in a stirred tank , is defined as italicNu = 0.45 Re 2 / 3 Pr 1 / 3 true( μ μ normalw true) 0.14 true( 1 H / D t true) 0.15 true( L L normals true) 0.2 where Nusselt number: .25em italicNu = hD k Reynolds number: .25em italicRe = ρ d 2 N μ Prandtl number: .25em italicPr = μ / ρ …”

Dynamics of excitation pulses with attractive interaction: Kinematic analysis and chemical wave experiments

“…To analyze the dynamics of a given system, we need to have knowledge of the rules that govern the repulsive and/or attractive particle-particle interaction. In most experimental reaction-diffusion systems, this interaction is described by the underlying dispersion relation which quantifies the dependence of pulse speed on interpulse distance [15]. The dispersion curve reflects the response of the propagating pulse to the refractory tail of its immediate predecessor.…”