Detail Simulation of Unsteady Small Heat Source Effects in Sub-Micron Heat Conduction   Oleh:  Murthy, Jayathi Y. ; Amon, Cristina H. ; Narumanchi, Sreekant V.J. Jenis: Article from Bulletin/Magazine Dalam koleksi: Journal of Heat Transfer vol. 125 no. 5 (Oct. 2003), page 896-903. Topik: HEAT; small heat source; heat conduction Ketersediaan Perpustakaan Pusat (Semanggi) Nomor Panggil: JJ90.7 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada     Lihat Detail Induk Isi artikel In compact transistors, large electric fields near the drain side create hot spots whose dimensions are smaller than the phonon mean free path in the medium. In this paper, we present a study of unsteady hot spot behavior. The unsteady gray phonon Boltzmann transport equation (BTE) is solved in the relaxation time approximation using a finite volume method. Electron - phonon interaction is represented as a heat source term in the phonon BTE. The evolution of the temperature profile is governed by the interaction of four competing time scales : the phonon residence time in the hot spot and in the domain, the duration of the energy source, and the phonon relaxation time. The influence of these time scales on the temperature is investigated. Both boundary scattering and heat source localization effects are observed to have considerable impact on the thermal predictions. Comparison of BTE solutions with conventional Fourier diffusion analysis reveals significant discrepancies. Opini Anda Klik untuk menuliskan opini Anda tentang koleksi ini! Kembali

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