Temat: air gap - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Solution of the Pure Metals Solidification Problem by Involving the Material Shrinkage and the Air-Gap Between Material and Mold
Autorzy:: Matlak, J.
Słota, D.
Powiązania:: https://bibliotekanauki.pl/articles/381022.pdf
Data publikacji:: 2015
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: solidification process
air-gap
Stefan problem
metal shrinkage
proces krzepnięcia
szczelina powietrzna
problem Stefana
skurcz stopu
Opis:: In this paper we describe an algorithm for solving the pure metals solidification problem by involving the metal shrinkage and air-gap between material and mold. In this algorithm we use the finite element method supplemented by the procedures allowing to define the position of the moving interface and the change of the material size associated with the shrinkage. We present also an example illustrating the precision of presented method.
Źródło:: Archives of Foundry Engineering; 2015, 15, 3 spec.; 47-52
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: Analysis of sound absorption performance of acoustic absorbers made of fibrous materials
Autorzy:: Meissner, Mirosław
Zieliński, Tomasz G.
Powiązania:: https://bibliotekanauki.pl/articles/2202433.pdf
Data publikacji:: 2022
Wydawca:: Politechnika Poznańska. Instytut Mechaniki Stosowanej
Tematy:: sound absorption
multi-layer absorber
surface impedance
fibrous materials
air gap
chłonność akustyczna
wielowarstwowy pochłaniacz dźwięku
materiały włókniste
szczelina powietrzna
Opis:: Absorbing properties of multi-layer acoustic absorbers were modeled using the impedance translation theorem and the Garai and Pompoli empirical model, which enables a determination of the characteristic impedance and propagation constant of fibrous sound-absorbing materials. The theoretical model was applied to the computational study of performance of single-layer acoustic absorber backed by a hard wall and the absorber consisting of one layer of absorbing material and an air gap between the rear of the material and a hard back wall. Simulation results have shown that a high thickness of absorbing material may cause wavy changes in the frequency relationship of the normal and random incidence absorption coefficients. It was also found that this effect is particularly noticeable for acoustic absorbers with a large thickness of air gap between the absorbing material and a hard back wall.
Źródło:: Vibrations in Physical Systems; 2022, 33, 2; art. no. 2022205
0860-6897
Pojawia się w:: Vibrations in Physical Systems
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 3.

Tytuł:: Computer Simulation of the Solidification Process Including Air Gap Formation
Autorzy:: Skrzypczak, T.
Węgrzyn-Skrzypczak, E.
Sowa, L.
Powiązania:: https://bibliotekanauki.pl/articles/383120.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: solidification process
computer simulation
finite element method
multimesh approach
air gap
proces krzepnięcia
symulacja komputerowa
metoda elementów skończonych
podejście wielowymiarowe
szczelina powietrzna
Opis:: The paper presents an approach of numerical modelling of alloy solidification in permanent mold and transient heat transport between the casting and the mold in two-dimensional space. The gap of time-dependent width called "air gap", filled with heat conducting gaseous medium is included in the model. The coefficient of thermal conductivity of the gas filling the space between the casting and the mold is small enough to introduce significant thermal resistance into the heat transport process. The mathematical model of heat transport is based on the partial differential equation of heat conduction written independently for the solidifying region and the mold. Appropriate solidification model based on the latent heat of solidification is also included in the mathematical description. These equations are supplemented by appropriate initial and boundary conditions. The formation process of air gap depends on the thermal deformations of the mold and the casting. The numerical model is based on the finite element method (FEM) with independent spatial discretization of interacting regions. It results in multi-mesh problem because the considered regions are disconnected.
Źródło:: Archives of Foundry Engineering; 2017, 17, 4; 147-150
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Informacja

Wyszukujesz frazę "air gap" wg kryterium: Temat

Źródło danych

Dostawca treści

Kolekcja

Rok wydania

Wydawca

Temat

Autor

Typ dokumentu

Język