scholarly journals Numerical Analysis of Fire Water Storage Tank under Seismic Loading

2021 ◽  
Vol 850 (1) ◽  
pp. 012019
Author(s):  
R Nishanth ◽  
D Kishok Rai ◽  
Hemkar Sharma ◽  
Rivington Kingston ◽  
Davidson Jebaseelan ◽  
...  
Keyword(s):  
Finite Element ◽  
Storage Tank ◽  
Hoop Stress ◽  
Plate Thickness ◽  
Water Storage ◽  
Bottom Plate ◽  
Element Analysis ◽  
Water Storage Tank ◽  
Finite Element Analysis Simulation ◽  
Shell Plate

Abstract Maintenance and continuously monitoring the condition of above ground storage tanks are significant when the tanks are placed in service. The American Petroleum Institution (API) 653 and other international codes provides the minimum requirements for inspection & maintaining the integrity of tanks during its service. The tank settlement is one of the major threats for tank’s integrity. In this paper, a storage tank is assessed for uniform settlement under various loading condition such as seismic, dead load, static load, corrosion loss of shell plate etc. In the present study, a finite element model is designed with uniform settlement condition and study of its governing hoop stress at shell plate has been carried out under different loading conditions. A fire water storage tank (constructed with IS 2060 GR. B material) and different seismic zones in India are taken for this study. The finite element analysis simulation shows that increase of hoop stress in the bottom shell course due to uniform settlement, the decrease in plate thickness and with different seismic active regions. Moreover, the maximum stresses have been observed at shell bottom course (close to bottom plate).

scholarly journals Analysis of nodalization effects on the prediction error of generalized finite element method used for dynamic modeling of hot water storage tank

2015 ◽  
Vol 36 (3) ◽  
pp. 123-138 ◽  
Author(s):  
Marcin Wołowicz ◽  
Jakub Kupecki ◽  
Katarzyna Wawryniuk ◽  
Jarosław Milewski ◽  
Konrad Motyliński
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Flow Rate ◽  
Prediction Error ◽  
Storage Tank ◽  
Water Storage ◽  
Hot Water ◽  
Generalized Finite Element Method ◽  
Water Storage Tank ◽  
Generalized Finite Element

Abstract The paper presents dynamic model of hot water storage tank. The literature review has been made. Analysis of effects of nodalization on the prediction error of generalized finite element method (GFEM) is provided. The model takes into account eleven various parameters, such as: flue gases volumetric flow rate to the spiral, inlet water temperature, outlet water flow rate, etc. Boiler is also described by sizing parameters, nozzle parameters and heat loss including ambient temperature. The model has been validated on existing data. Adequate laboratory experiments were provided. The comparison between 1-, 5-, 10- and 50-zone boiler is presented. Comparison between experiment and simulations for different zone numbers of the boiler model is presented on the plots. The reason of differences between experiment and simulation is explained.

Lightweight Study on Gear Reducer Box Structure Based on Finite Element Analysis

2013 ◽  
Vol 823 ◽  
pp. 20-23 ◽  
Author(s):  
Yi Bin He ◽  
Bing Kuan Yang ◽  
Yu Zhang ◽  
Shi Wen Liu ◽  
Ding Fang Chen
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Lightweight Design ◽  
Plate Thickness ◽  
Comprehensive Analysis ◽  
Practical Significance ◽  
Bottom Plate ◽  
Element Analysis ◽  
Box Structure ◽  
Stress And Deformation

On the basis of the analysis of the problems existing in the current research on gear reducer structure, using Solidworks to reducer box structure finite element analysis, by changing the angle of the rib plate and rib plate thickness, the size of the box thickness and the thickness of the bottom plate, based on a comparative study on the experimental data, the comprehensive analysis of the change of the stress and displacement, enclosure structure stress and deformation with the change of size of box body, and eventually make the reducer box to achieve optimization of the structure, lightweight design for the reducer box to explore effective ways and means, has a certain practical significance. Keywords: Solidworks;Finite Element Analysis;Gear Reducer Box;Lightweight;

Seismic Performance of PCS Water Storage Tank Considering Fluid-Structure Interaction

2017 ◽  
Author(s):  
Hongliang Gou ◽  
ZiDuan Shang ◽  
Yugang Sun ◽  
Meng Chu ◽  
Honghui Ge
Keyword(s):  
Finite Element ◽  
Dynamic Response ◽  
Finite Element Model ◽  
Modal Analysis ◽  
Storage Tank ◽  
Water Storage ◽  
Element Model ◽  
Equivalent Model ◽  
Water Storage Tank ◽  
Structure Interaction

Water sloshing of PCS water storage tank (PCSWST) can cause a significant effect on the dynamic response of Shield Building under seismic loads. It is complicated to perform the calculation of water sloshing especially for the tanks with irregular shapes. Consequently, it is important to establish an appropriate equivalent mechanical model for simulation[1], [2]. In this paper, the water sloshing is firstly investigated based on the potential flow theory, which including the seismic modal analysis. Based on the theoretical research, a highly efficient (simplified) calculation formula is derived, which mainly considering the impulse mass, convective mass, position function and spring stiffness etc., through this way the equivalent model for PCSWST is established by applying mass-spring element. The equivalent models based on Housner & Graham theory[3], [4] are also established. Additionally, the 3-D finite element model of water sloshing considering fluid-structure interaction is established by using the software of Ansys. Total of four models are built as shown in the paper, then modal analysis and dynamic response under earthquake excitation are performed using ANSYS. The results are compared to justify the equivalent model in this paper. The results indicate that Graham formula did not provide the correct location expressions for the convective masses. The expressions for the impulsive mass and its position given by Housner are not satisfactory. As a comparison, the results from the equivalent model, which is recommended in this paper, can best fit the data from finite model. From above results and comparisons, a more reasonable and refined equivalent model for PCSWST design is provided. Based on the equivalent model established, the influence on structure caused by the increase of water mass is analyzed. The results from the seismic analysis are compared, including member force, shear strain and shear force. Based on the research, the feasibility of the design is analyzed, which can provide important support for the structural design. Finally, the seismic reduction of water tank is studied using the finite element model established in this paper. The horizontal and vertical anti-sloshing baffles are designed. The maximum acceleration and displacement corresponding to different baffle length are compared to study the effect of the seismic reduction.

Energy-saving analysis of air source heat pump integrated with a water storage tank for heating applications

2020 ◽  
Vol 180 ◽  
pp. 107029
Author(s):  
Pin Wu ◽  
Zhichao Wang ◽  
Xiaofeng Li ◽  
Zhaowei Xu ◽  
Yingxia Yang ◽  
...  
Keyword(s):  
Energy Saving ◽  
Heat Pump ◽  
Storage Tank ◽  
Water Storage ◽  
Water Storage Tank ◽  
Air Source Heat Pump

scholarly journals The effect of household storage tanks/vessels and user practices on the quality of water: a systematic review of literature

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
Musa Manga ◽  
Timothy G. Ngobi ◽  
Lawrence Okeny ◽  
Pamela Acheng ◽  
Hidaya Namakula ◽  
...  
Keyword(s):  
Systematic Review ◽  
Water Quality ◽  
Storage Tank ◽  
Grey Literature ◽  
Water Storage ◽  
Storage Tanks ◽  
Water Storage Tank ◽  
Hygiene Practices ◽  
Quality Of Water ◽  
Vessel Material

Abstract Background Household water storage remains a necessity in many communities worldwide, especially in the developing countries. Water storage often using tanks/vessels is envisaged to be a source of water contamination, along with related user practices. Several studies have investigated this phenomenon, albeit in isolation. This study aimed at developing a systematic review, focusing on the impacts of water storage tank/vessel features and user practices on water quality. Methods Database searches for relevant peer-reviewed papers and grey literature were done. A systematic criterion was set for the selection of publications and after scrutinizing 1106 records, 24 were selected. These were further subjected to a quality appraisal, and data was extracted from them to complete the review. Results and discussion Microbiological and physicochemical parameters were the basis for measuring water quality in storage tanks or vessels. Water storage tank/vessel material and retention time had the highest effect on stored water quality along with age, colour, design, and location. Water storage tank/vessel cleaning and hygiene practices like tank/vessel covering were the user practices most investigated by researchers in the literature reviewed and they were seen to have an impact on stored water quality. Conclusions There is evidence in the literature that storage tanks/vessels, and user practices affect water quality. Little is known about the optimal tank/vessel cleaning frequency to ensure safe drinking water quality. More research is required to conclusively determine the best matrix of tank/vessel features and user practices to ensure good water quality.

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