Transient analysis

This paper is aimed at quickly predicting the dynamic behavior of functionally graded plates using nontraditional computational approaches consisting of artificial neural networks (ANN) and extreme gradient boosting (XGBoost).

11p vifaye 20-09-2024 3 1   Download

Unsaturated soil behaviors characterize the failure mechanisms of geotechnical infrastructures with transient seepage conditions. Therefore, an accurate estimate of the unsaturated groundwater flow is vital in improving hazard management and assessment. This study attempts to develop a numerical scheme for 2-D transient analysis under unsaturated conditions.

11p viyoko 20-09-2024 2 1   Download

This research investigates the relationship between post fault transient overvoltages and the functionality of the digital distance protection. The study is conducted in a 66kV network with a neutral earth resistor as method to earth the power system. This paper begins by performing an extensive power system analysis on ground fault transient overvoltages. The study is conducted by using the PSCAD-EMTC software package.

180p runthenight07 01-03-2023 9 2   Download

In this paper, the technique is applied to analyze transient heat transfer problems. In order increase time efficiency, a modelreduction technique, namely the proper orthogonal decomposition (POD), is employed. The idea is that a given large-size problem is projected into a small-size one which can be solved faster but still maintain the required accuracy.

10p larachdumlanat127 02-01-2021 10 2   Download

The paper describes the modelling of primary pumps in advanced sodium cooled reactors using the TRACE code. Following the implementation of the models, the results obtained in the analysis of different design basis transients are compared with the simplifying approximations used in reference models.

7p christabelhuynh 30-05-2020 11 0   Download

The results of simulated transients for three typical PWR accidents are presented: a turbine trip with station blackout, a large break loss of coolant accident and a small break loss of coolant accident. The analyses show that the safety criteria are respected and that the reactor quickly reaches a safe shutdown state without operator action and external power.

10p christabelhuynh 31-05-2020 36 1   Download

This work aims at determining the key parameters controlling the average oxygen profile within the sample in the two-phase regions at 1200 °C. High temperature steam oxidation tests interrupted by water quench were performed using pre-hydrided Zircaloy-4 samples.

8p christabelhuynh 30-05-2020 9 0   Download

The studies presented in this paper are performed in the general framework of transient coupled calculations with accurate neutron kinetics models able to characterize spatial decoupling in the core. An innovative fission matrix interpolation model has been developed with a correlated sampling technique associated to the Transient Fission Matrix (TFM) approach.

14p christabelhuynh 30-05-2020 7 0   Download

In advanced modern turbines, the temperature of the turbine's first blade row which is called the turbine's hot part, increases almost as 1000℃. These blades must operate for long periods of time.

12p tohitohi 19-05-2020 36 2   Download

This paper presents an analytical and a numerical thermomechanical investigation of a thick-walled cylinder made of the functionally graded materials (FGMs). The hollow cylinder is subjected to a pressure and a thermal load and the properties of this material are varying across the thickness from the inner face that is a ceramic to the outer one which is a metal.

8p tohitohi 19-05-2020 11 0   Download

This paper describes the one-dimensional, transient heat conduction in a rectangular piece of Pyinkado (Xylia xylocarpa) with cross grain and in an orthotropic wooden cylinder. Computerized solutions of a generalized, nonlinear heat equation are derived by discretizing the time domain using finite element techniques.

9p slimzslimz 08-12-2019 14 1   Download

The results indicate that the M2 LFR is safe enough under these three transients due to the good inherent safety features of the reactor, without human intervention, the reactor will reach a new steady state under UTOP condition.

9p minhxaminhyeu3 12-06-2019 10 3   Download

This study mainly focuses on the structural design optimization of the 4th-generation reactor coolant pump, including analysis of external characteristics, inner flow, and transient characteristic. It was found that: the reactor coolant pump with a central symmetrical dual-outlet volute structure has better radialdirection balance, the pump without guide vane has better hydraulic performance, and the pump with guide vanes has worse torsional vibration and pressure pulsation.

10p minhxaminhyeu3 12-06-2019 16 1   Download

Những nội dung chính được trình bày trong bài giảng Electrical and electronic principles - Chương 7 gồm có: Laplace transform, circuit element models, circuit analysis, transient analysis. Mời các bạn cùng tham khảo.

23p nhanmotchut_1 04-10-2016 60 2   Download

Lecture "Fundamentals of control systems - Chapter 5: Analysis of control system performance" presentation of content: Performance criteria, steady state error, transient response, the optimal performance index,... Invite you to reference.

0p doinhugiobay_17 04-03-2016 64 5   Download

Lecture Control system design: Feedback control system characteristics presents the following content: Error signal analysis, sensitivity of control systems to parameter variations, disturbance signals in a feedback control system, control of the transient response, steady – state error, the cost of feedback, control system characteristics using control design software.

32p youcanletgo_04 17-01-2016 56 2   Download

In this study we describe the isolation of three genes of the CYP11B family of the guinea pig. CYP11B1 codes for the previously described 11b-hydroxylase [Bulow, H.E., Mobius, ¨ ¨ K., Bahr, V. & Bernhardt, R. (1996) Biochem. Biophys. Res. ¨ Commun. 221, 304–312] while CYP11B2 represents the aldosterone synthase gene. As no expression for CYP11B3 was detected this gene might represent a pseudogene.

9p system191 01-06-2013 38 3   Download

During the development of multicellular organisms, both transient and stable gene expression patterns have to be established in a precisely orchestrated sequence. Evidence from diverse model organisms indicates that this epigenetic program involves not only transcription factors, but also the local structure, composition, and modification of chromatin, which define and maintain the accessibility and transcriptional competence of the nucleosomal DNA template.

6p research12 01-06-2013 33 4   Download

The process of pressure-induced modification of horse liver alcohol dehydrogenase (HLADH) was followed by measuringin situ catalytic activity (up to 250 MPa), intrinsic fluorescence (0.1–600 MPa) and modifications of FTIR spectra (up to 1000 MPa). The tryptophan fluor-escence measurements and the kinetic data indicated that the pressure-induced denaturation of HLADH was a process involving several transitions and that the observed transient states have characteristic properties of molten globules. ...

10p tumor12 20-04-2013 22 2   Download

With the amount of genetic information available, a lot of attention has focused on systems biology, in particular biomolecular interactions. Con-sidering the huge number of such interactions, and their often weak and transient nature, conventional experimental methods such as X-ray crystal-lography and NMR spectroscopy are not sufficient to gain structural insight into these. A wealth of biochemical and⁄or biophysical data can, however, readily be obtained for biomolecular complexes.

20p awards 05-04-2013 46 3   Download