Autor: Chien, Nguyen Manh - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Numerical investigating the effect of water depth on ship resistance using RANS CFD method
Autorzy:: Hoa, Nguyen Thi Ngoc
Vu, Bich Ngoc
Tran, Ngoc Tu
Chien, Nguyen Manh
Le, Tat Hien
Powiązania:: https://bibliotekanauki.pl/articles/259677.pdf
Data publikacji:: 2019
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: ship resistance
shallow water
RANS
Opis:: On inland waterways the ship resistance and propulsive characteristics are strictly related to the depth of the waterway, thus it is important to have an understanding of the influence of water depth on ship hydrodynamic characteristics. Therefore, accurate predictions of hydrodynamic forces in restricted waterways are required and important. The aim of this paper is investigating the capability of the commercial unsteady Reynolds– Averaged Navier–Stokes (RANS) solver to predict the influence of water depth on ship resistance. The volume of fluid method (VOF) is applied to simulate the free surface flow around the ship. The hull resistance in shallow and deep water is compared. The obtained numerical results are validated against related experimental studies available in the literature.
Źródło:: Polish Maritime Research; 2019, 3; 56-64
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Design and performance analysis of a mechanically coupled spring compliant to out-of-plane oscillation
Autorzy:: Nguyen, Duong Van
Nguyen, Chien Quoc
Dang, Hieu Van
Chu, Hoang Manh
Powiązania:: https://bibliotekanauki.pl/articles/27309868.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:: coupled spring
mode coupling
serpentine spring
Sigitta spring theory
finite element
method
sprzężenie trybów
element końcowy
metoda
Opis:: In this paper, a spring system symmetrically arranged around a circular plate compliant to out-of-plane oscillation is proposed. The spring system consists of single serpentine springs mutually coupled in a plane. Three theoretical mechanical models for evaluating the stiffness of the spring system are built, which are based on the flexural beam, Sigitta, and serpentine spring theories and equivalent mechanical spring structure models. The theoretically calculated results are in good agreement with numerical solutions using the finite element method, with errors less than 10% in the appropriate dimension ranges of the spring. Compared to similar spring structures without mechanical coupling, the proposed mechanically coupled spring shows advantage in suppressing the mode coupling.
Źródło:: Archive of Mechanical Engineering; 2022, LXIX, 4; 629--643
0004-0738
Pojawia się w:: Archive of Mechanical Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Performance analysis of serpentine springs compliant to out-of-plane oscillation
Autorzy:: Duong, Nguyen Van
Chien, Nguyen Quoc
Hieu, Dang Van
Hoang, Chu Manh
Powiązania:: https://bibliotekanauki.pl/articles/2086964.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: serpentine spring
out-of-plane oscillation
curved spring beam
straight spring beam
mode coupling
Opis:: The performance of two serpentine type springs is comparatively investigated. The first type is composed of straight beams and the second one is composed of circular arcs. Based on comparing calculation results and simulation data, the crab-leg spring model is appropriate for evaluating the stiffness of springs. To obtain the operation mode to be the first mode, the number of turns and the opening angle of springs should be increased. The performance of springs is evaluated via analysis of mode coupling. This study is useful for choosing an appropriate serpentine spring and the stiffness calculation model for applications in microelectroemchanical sensors and actuators.
Źródło:: Journal of Theoretical and Applied Mechanics; 2022, 60, 1; 91--101
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

Artykuł

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