Transactions of the Indian National Academy of Engineering : an international journal of engineering and technology最新文献

{"title":"Tailoring Anisotropy and Heterogeneity of Selective Laser Melted Ti6Al4V Alloys","authors":"J. Karimi, L. Kollo, K. Prashanth","doi":"10.1007/s41403-023-00393-z","DOIUrl":"https://doi.org/10.1007/s41403-023-00393-z","url":null,"abstract":"","PeriodicalId":75237,"journal":{"name":"Transactions of the Indian National Academy of Engineering : an international journal of engineering and technology","volume":"31 1","pages":"245-251"},"PeriodicalIF":0.0,"publicationDate":"2023-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88139354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Longitudinal and Lateral Holes on the Performance of an Elliptical Pin Fin Heat Exchanger","authors":"Monoj Baruah, K. Kalita","doi":"10.1007/s41403-023-00391-1","DOIUrl":"https://doi.org/10.1007/s41403-023-00391-1","url":null,"abstract":"","PeriodicalId":75237,"journal":{"name":"Transactions of the Indian National Academy of Engineering : an international journal of engineering and technology","volume":"221 2 1","pages":"235-244"},"PeriodicalIF":0.0,"publicationDate":"2023-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76772988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hydrogen Storage Performance of C14 Type Ti0.24V0.17Zr0.17Mn0.17Co0.17Fe0.08 High Entropy Intermetallics","authors":"Abhishek Kumar, T. Yadav, M. Shaz, N. Mukhopadhyay","doi":"10.1007/s41403-023-00390-2","DOIUrl":"https://doi.org/10.1007/s41403-023-00390-2","url":null,"abstract":"","PeriodicalId":75237,"journal":{"name":"Transactions of the Indian National Academy of Engineering : an international journal of engineering and technology","volume":"64 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77643698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Numerical Study on NO_x Emissions from Jet A–Air Detonations","authors":"M. Iyer, A. Dahake, Ranjay Singh, Ashutosh Kumar Singh","doi":"10.1007/s41403-023-00389-9","DOIUrl":"https://doi.org/10.1007/s41403-023-00389-9","url":null,"abstract":"","PeriodicalId":75237,"journal":{"name":"Transactions of the Indian National Academy of Engineering : an international journal of engineering and technology","volume":"197 1","pages":"221-233"},"PeriodicalIF":0.0,"publicationDate":"2023-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77651976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Novel Islanding Detection Method in a Distributed Generation Using Change in Phase Angle Difference Between Positive Sequence Current and Voltage","authors":"Javeed Bashir, P. Jena","doi":"10.1007/s41403-022-00385-5","DOIUrl":"https://doi.org/10.1007/s41403-022-00385-5","url":null,"abstract":"","PeriodicalId":75237,"journal":{"name":"Transactions of the Indian National Academy of Engineering : an international journal of engineering and technology","volume":"5 3","pages":"149-159"},"PeriodicalIF":0.0,"publicationDate":"2023-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72461681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Internal Heat Generation on Mixed Convection Flow from a Vertical Plate to a Fluid with Nonlinear Thermal Radiation","authors":"B. Jha, Gabriel Samaila","doi":"10.1007/s41403-022-00386-4","DOIUrl":"https://doi.org/10.1007/s41403-022-00386-4","url":null,"abstract":"","PeriodicalId":75237,"journal":{"name":"Transactions of the Indian National Academy of Engineering : an international journal of engineering and technology","volume":"95 1","pages":"161-170"},"PeriodicalIF":0.0,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73368458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficacy of Curcumin–Surfactant Complex Towards Stabilisation of Emulsions","authors":"Mandar P. Badve, Manasi Pimpalkar","doi":"10.1007/s41403-022-00383-7","DOIUrl":"https://doi.org/10.1007/s41403-022-00383-7","url":null,"abstract":"","PeriodicalId":75237,"journal":{"name":"Transactions of the Indian National Academy of Engineering : an international journal of engineering and technology","volume":"109 1","pages":"127-137"},"PeriodicalIF":0.0,"publicationDate":"2023-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88056509","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Improving Indoor Air Ventilation by a Ceiling Fan to Mitigate Aerosols Transmission.","authors":"Santosh Ramagya Mallah, Sachidananda Behera, Atul Sharma, Amit Agrawal, Rajneesh Bhardwaj","doi":"10.1007/s41403-023-00387-x","DOIUrl":"10.1007/s41403-023-00387-x","url":null,"abstract":"<p><p>Improving air flow and ventilation in an indoor environment is central to mitigating the airborne transmission of aerosols. Examples include, COVID-19 or similar diseases that transmit by airborne aerosols or respiratory droplets. While there are standard guidelines for enhancing the ventilation of space, the effect of a ceiling fan on the ventilation has not been explored. Such an intervention could be critical, especially in a resource-limited setting. In the present work, we numerically study the effect of a rotating ceiling fan on indoor air ventilation using computational fluid dynamics (CFD) simulations. In particular, we employ RANS turbulence model and compare the computed flow fields for a stationary and rotating fan in an office room with a door and window. While a re-circulation zone spans the whole space for the stationary fan, stronger re-circulation zones and small stagnation zones appear in the flow-field inside the room for the case of a rotating fan. The re-circulation zones help bring in fresh air through the window and remove stale air through the door, thereby improving the ventilation rate by one order of magnitude. We briefly discuss the chances of infection by aerosols via flow-fields corresponding to stationary and rotating fans.</p><p><strong>Graphical abstract: </strong></p>","PeriodicalId":75237,"journal":{"name":"Transactions of the Indian National Academy of Engineering : an international journal of engineering and technology","volume":"8 1","pages":"171-182"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9887580/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10788075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effectiveness of N95 Mask in Preventing COVID-19 Transmission.","authors":"Yagya Narayan,&nbsp;Sanghamitro Chatterjee,&nbsp;Amit Agrawal,&nbsp;Rajneesh Bhardwaj","doi":"10.1007/s41403-023-00394-y","DOIUrl":"https://doi.org/10.1007/s41403-023-00394-y","url":null,"abstract":"<p><p>N95 mask has emerged as a potential measure to mitigate the airborne transmission of respiratory disease such as COVID-19. Herein, we experimentally investigated the impact and interaction of pure water droplets as surrogate to respiratory droplets with the different layers of a commercially available N95 mask to demonstrate the penetration and passage-capability of respiratory fluids through the different layers. The penetration of an impacting droplet through the mask layers was characterized by elucidating the ejection of secondary droplets from the rear-side surface of the target mask material. In addition, the passage of respiratory fluids through the mask layers was characterized by capillary imbibition of the droplet liquid through the pores, as a function of wettability of the mask material. Droplet impact at Weber numbers We = 208 and 416 has been considered in the present study; the chosen We range corresponds to that of cough droplets realized in real respiratory events. Each layer of the N95 mask is hydrophobic that prevents capillary imbibition through the pores: a sessile droplet placed over the surface exhibits classical diffusion-limited evaporation. Droplet impact experiments on N95 mask layer surfaces reveal that a single layer allows liquid penetration at We = 416; while a combination of five layers, as is the case of a commercially available N95 mask, blocks the penetration completely, consistent with the widely known effectiveness of N95 masks. Herein, we devote special attention to compare the so-obtained efficiency of N95 masks to that of a recently designed two-layer cloth mask containing an intermediate High-Efficiency Particulate Air (HEPA) filter layer (Narayan et al. in Phys Fluids 34:061703, 2022). We conclusively show that the performance of the designed cloth mask is identical to that of a commercially available N95 mask. The assessment of mask effectiveness further includes examination of breathability and comfort by means of passage of air through them. A comparative study has been presented herein for a clear demonstration of effectiveness of different masks in preventing air-borne transmission of COVID-19.</p>","PeriodicalId":75237,"journal":{"name":"Transactions of the Indian National Academy of Engineering : an international journal of engineering and technology","volume":"8 2","pages":"253-262"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9947910/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10660899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Smart Intensity Control in Surgical Lights for Efficient Shadow Reduction Using Ultrasonic Sensor","authors":"Adityapratap Singh, D. J. Pete","doi":"10.1007/s41403-022-00384-6","DOIUrl":"https://doi.org/10.1007/s41403-022-00384-6","url":null,"abstract":"","PeriodicalId":75237,"journal":{"name":"Transactions of the Indian National Academy of Engineering : an international journal of engineering and technology","volume":"39 1","pages":"139-148"},"PeriodicalIF":0.0,"publicationDate":"2022-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85948884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}