Hatsuhiro Kato

Microwave Absorption of Catalyst in a Thermal Decomposition Reaction by Recursive Transfer Method

The microwave heating of the catalyst in a decomposition reactor is analyzed using a microwave theory of the recursive transfer method. The feature of the catalyst film is expressed using an effective dielectric constant and an effective conductance. It is pointed out that the heating of the catalyst is determined by the effective skin depth and diameter of the container tube.

Accuracy of Weak-Form Discretisation and Extention of Recursive Transfer Method for Scattering Problems Governed by Fourth-Order Differential Equation

We proposed a new discretisation scheme for deriving a second-order difference equation from any system being formulated with the weak-form theory framework. The proposed scheme enables us to extend the application range of the recursive transfer method (RTM) and to express perfectly matching conditions for port boundaries in a discrete fashion under the RTM framework. To evaluate the accuracy and demonstrate the validity of the proposed scheme, we discussed the scattering problem governed by the fourth-order differential equation that was hitherto outside the RTM application range. The difference equation can play an important role in maintaining the balance of the bending moment and the shear force at the interface of two segments. Using the new port boundary condition, a quasi-localised wave was extracted and found to be related to the phase shift due to Fano resonance.

Transmission of Acoustic Waves from a Solid Cylinder into a Liquid and Equivalent Acoustic Impedances

We discuss the feasibility of the one-dimensional theory by which the transmission of acoustic waves from a solid cylinder into a liquid is analyzed with the acoustic impedance. For this purpose, experiments were performed on a cylinder made of Cu with a size of 1.98mm o

Thermal Analysis of Joule Heat Generated on Metal Thin Film by Microwave Irradiation

The microwave heating of the catalyst coated with nickel thin film was modeled and calculated. The theory was established by using Maxwell equation and so on. The result corresponded with experimental one. The theory also shows the relationship between the film thickness and the microwave power absorbed.