IIT Madras is a public technical and research university located in Chennai, Tamil Nadu. Founded in 1959, it is recognised as an Institute of National Importance.

IIT Madras has been ranked as the top engineering institute in India for four years in a row by the National Institutional Ranking Framework of the MHRD

It currently offers undergraduate, postgraduate and research degrees across 16 disciplines in Engineering, Sciences, Humanities and Management. About 596 faculty belonging to science and engineering departments and centres of the Institute are engaged in teaching, research and industrial consultancy.

IIT Madras

Investigations of a turbulent Mach 1.3 flow past a porous medium are presented using computational fluid dynamics. The porous medium is modeled as a square array of circles in a cavity, whose porosity is varied by changing the inter-spacing of the circles. The flow topology within the porous medium near the clear-fluid/porous medium interface is shown to vary with porosity: secondary flows having a repetitive pattern are observed for porosity values less than 0.9, but not for higher values. The determination of the flow properties: streamwise velocity, pressure and temperature, at the clear-fluid/porous-medium interface, show that the properties vary in a repetitive manner between each pair of adjacent circles. Estimation of average values of the properties along the length of the clear-fluid/porous-medium interface shows the presence of a slip velocity, which varies with the porosity of the medium. Non-dimensional gradients normal to the free-stream direction of streamwise velocity and temperature at the clear-fluid/porous-medium interface show smooth variation with porosity; however, the same trend is not observed for pressure. The computations presented here are performed using an existing immersed-boundary method developed for compressible turbulent flows, wherein the porous medium constituted by the circles are discretized as immersed surfaces. Menter’s k −ω/k −ɛ turbulence model is used for the computations. © 2019, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.

Department of Aerospace Engineering

Department of Humanities and Social Sciences

Department of Mathematics

AIAA Aviation 2019 Forum

Transonic flow past a porous medium: Effect of porosity on slip velocity and flow gradients at the clear-fluid/porous-medium interface

World University root node

Presented at 31st All India Conference of Linguistics

Yes-no Questions: Probing the Structures of Indian English

Presented at National Conference on Language, Identity and Society: Centrality of Language in Formation of Identity in Contemporary Society

Conceptualizing Linguistic and Cultural Identities

The main aim of a newspaper is to communicate, transfer and spread the news related to the day-to-day happenings of the contemporary society. So the issue that remains most important withthe newspapers is that the information has to be circulated in its best form in the best possibleway. The newspaper headlines play a vital role in the presentation as it provides information inthe most condensed form.

Presented at Free Linguistics Conference 2015

Headlines: Same Lines

Previous literature recognizes that some South Asian Languages (henceforth SALs)including Malayalam have active-passives with transitive predicates (Mahajan 1994;Chandra and Sahoo 2013). These active-passives do not demote their external arguments,a property that defines English (canonical) passives. Rather, these DPs, though theyappear as agentive by- phrases, are actually the surface subjects. However, there are notenough studies with ditransitive predicates to suggest if they too yield similar active-passive structures. Additionally, there is no literature on whether cross-linguistictypological generalizations like that given by Woolford (1993) are also found in SALs.This paper tries to remove these lacunae by presenting novel data with Malayalamditransitive predicates to show (i) that they too have active-passives and (ii) when theexternal arguments are not present, they have symmetric short passives, where either thedirect or the indirect object occupies the subject position.

International Journal of Dravidian Linguistics

Ditransitive Active-passives in Malayalam: A brief note

In this paper, we order events in time by using evidence present in their partial orders. We propose an algorithm named TimeRank, a variant of PageRank, for this task. PageRank operates on the hyperlink graph and orders the web pages according to their importance. We identify limitations of PageRank in the context of temporally ordering the nodes. We draw an analogy between the notion of importance in PageRank to the notion of recency in TimeRank. We evaluate TimeRank using the Citation Graph of scientific publications of physics and propose a baseline method to compare TimeRank and PageRank. The baseline method ranks the nodes according to their number of immediate predecessors without considering the higher order transitive relations among the events. Evaluation results suggest that TimeRank outperforms both the baseline method and PageRank in this task. © Springer International Publishing Switzerland 2015.

Department of Computer Science and Engineering

Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)

Adapting PageRank to position events in time

Presented at 20th Himalayan Languages Symposium (HLS 20)

The development of copulas and their functions: A typological perspective

Presented at 8th Students Conference of Linguistics in India (SCONLI 8)

Error, or no error: An analysis

Second language learning (L2) is a unique and interesting domain of research. Most learners have an existing knowledge of one or more first languages (L1), which sometimes aids and sometimes hinders the acquisition of a new language. We present here, the case of Indian English question tags that seem to have been influenced by both ‘standard’ (American and British) English and Hindi-Urdu, and yet exhibit some unique features. Our primary contentions are, (a) Indian English has its own grammatical system, and (b) the learning of Indian English does not crucially rely on the learners’ first language competence1 .

Language and Language Teaching

Learning puzzles with Indian english tags

Presented at 23rd Annual Meeting of the South East Asian Linguistics Society (SEALS 2013)

(Re-)visiting the Principles of Reflexivization: A Study of Reflexives in Khasi

Haspelmath (2010) debates whether universal (descriptive) categories of the types that generativists (cf. Newmeyer, 2007) envisage are real and needed for cross-linguistic studies. Instead every language has its own unique set of categories. We raise doubt on this “categorial particularism” position by drawing on underlying similarities of passive constructions of three South Asian languages - Oriya (Indo-Aryan), Malayalam (Dravidian) and Kharia (Austro-Asiatic). Unlike English-type passives, they retain subject properties for their logical subjects and object properties for their logical objects, suggesting commonalities that a “categorial particularism” approach would not allow us to posit. Our further contention is that like English passives, they too satisfy Shibatani’s (1985) minimal condition for passives – the underscoring or the optionality of agents. Passive voice must therefore be a universal found in all languages primarily resulting in the optionality of agents. We also show how adopting this approach helps us re-analyse Meitei and Ao (Tibeto-Burman) as languages involving passives.

Fulltext

Acta Linguistica Asiatica

Passives in South Asian Languages: Some Typological Puzzles

Presented at South Asian Languages Analysis Roundtable 29 CIIL

Scope Patterns in Oriya

Presented at All India Conference of Linguists

Gradience In Ditransitives and Morphological Specifities: The Case Of Oriya

This paper aims at finding out if Oriya passives with ditransitives are symmetric or asymmetric passives. This typological schema is based on Woolford’s analysis of passives with ditransitives. The next task is to determine whether Oriya ditransitives are Double Object Constructions (DOCs) or Prepositional Dative Constructions (PDCs). Using some syntactic diagnostics like A-bar extraction and Indirect Object (IO) reconstruction, Oriya ditransitives will be identified as DOCs, and then by using agreement and binding facts, and Accusative Case Blocking (ACB) it will be shown that Oriya passives with ditransitives are asymmetric.&nbsp;

Presented at Lancaster Post Graduate Conference

Oriya Passives with Ditransitives

The concept of ‘identity’ has undergone radical changes in the recent years. Starting from cultural &nbsp;to linguistic &nbsp;to regional identity- all of them have undergone significant shifts and scholars attribute such changes to the ‘crisis of identity’. The research on identities has drawn the attention of researchers from various domains of Humanities and Social Sciences. Among these, linguistic research on identity has been more extensive as there are various socio-economic issues involved with the term ‘identity’ and it has been deeply rooted at the very core of language and society. My study on language and identity focuses on the current perspectives on concept of identity and its strong correlations with culture and language. It explores some significant theoretical insights and empirical findings vis-à-vis language, culture and identity.

ODISHA AND ODIA: CONCEPTUALIZING LINGUISTIC AND CULTURAL IDENTITIES

Aejaz M. (Ed). News Media Discourse: Issues and Perspectives.

Headlines: Same-lines, In Sheikh