Howard Alvin Stone (born January 19, 1960) is the Donald R. Dixon '69 and Elizabeth W. Dixon

Professor Professor (commonly abbreviated as Prof.) is an Academy, academic rank at university, universities and other post-secondary education and research institutions in most countries. Literally, ''professor'' derives from Latin as a "person who pr ...

Mechanical Mechanical may refer to: Machine * Machine (mechanical), a system of mechanisms that shape the actuator input to achieve a specific application of output forces and movement * Mechanical calculator, a device used to perform the basic operations of ...

and

Aerospace Engineering Aerospace engineering is the primary field of engineering concerned with the development of aircraft and spacecraft. It has two major and overlapping branches: aeronautical engineering and astronautical engineering. Avionics engineering is si ...

Princeton University Princeton University is a private university, private research university in Princeton, New Jersey. Founded in 1746 in Elizabeth, New Jersey, Elizabeth as the College of New Jersey, Princeton is the List of Colonial Colleges, fourth-oldest ins ...

. His field of research is in

fluid mechanics Fluid mechanics is the branch of physics concerned with the mechanics of fluids ( liquids, gases, and plasmas) and the forces on them. It has applications in a wide range of disciplines, including mechanical, aerospace, civil, chemical and bio ...

chemical engineering Chemical engineering is an engineering field which deals with the study of operation and design of chemical plants as well as methods of improving production. Chemical engineers develop economical commercial processes to convert raw materials int ...

and

complex fluid Complex fluids are mixtures that have a coexistence between two Phase (matter) , phases: solid–liquid (Suspension (chemistry) , suspensions or solutions of macromolecules such as polymers), solid–gas (Granular material, granular), liquid–gas ...

s. He became an Editor of the ''

Annual Review of Fluid Mechanics ''Annual Review of Fluid Mechanics'' is a peer-reviewed scientific journal covering research on fluid mechanics. It is published once a year by Annual Reviews and the editors are Parviz Moin and Howard Stone. As of 2022, ''Journal Citation Rep ...

'' in 2021.

Career

Stone completed his undergraduate studies at

University of California at Davis The University of California, Davis (UC Davis, UCD, or Davis) is a public land-grant research university near Davis, California. Named a Public Ivy, it is the northernmost of the ten campuses of the University of California system. The institut ...

and earned his Ph.D. at the

California Institute of Technology The California Institute of Technology (branded as Caltech or CIT)The university itself only spells its short form as "Caltech"; the institution considers other spellings such a"Cal Tech" and "CalTech" incorrect. The institute is also occasional ...

under the direction of

L. Gary Leal Leslie Gary Leal (born 18 March 1943) is the Warren & Katharine Schlinger Professor of Chemical Engineering at the University of California, Santa Barbara. He is known for his research work in the dynamics of complex fluids. Leal was elected a me ...

. He joined Princeton in 2009 after twenty years of professorship at the School of Engineering at

Harvard University Harvard University is a private Ivy League research university in Cambridge, Massachusetts. Founded in 1636 as Harvard College and named for its first benefactor, the Puritan clergyman John Harvard, it is the oldest institution of higher le ...

, and after spending one year as a post-doctoral fellow in the Department of Applied Mathematics and Theoretical Physics at

Cambridge University , mottoeng = Literal: From here, light and sacred draughts. Non literal: From this place, we gain enlightenment and precious knowledge. , established = , other_name = The Chancellor, Masters and Schola ...

. His research has been concerned with a variety of fundamental problems in

fluid In physics, a fluid is a liquid, gas, or other material that continuously deforms (''flows'') under an applied shear stress, or external force. They have zero shear modulus, or, in simpler terms, are substances which cannot resist any shear ...

motions dominated by

viscosity The viscosity of a fluid is a measure of its resistance to deformation at a given rate. For liquids, it corresponds to the informal concept of "thickness": for example, syrup has a higher viscosity than water. Viscosity quantifies the inte ...

, so-called low

Reynolds number In fluid mechanics, the Reynolds number () is a dimensionless quantity that helps predict fluid flow patterns in different situations by measuring the ratio between inertial and viscous forces. At low Reynolds numbers, flows tend to be domi ...

flows, and has frequently featured a combination of theory,

computer simulation Computer simulation is the process of mathematical modelling, performed on a computer, which is designed to predict the behaviour of, or the outcome of, a real-world or physical system. The reliability of some mathematical models can be dete ...

and

modeling A model is an informative representation of an object, person or system. The term originally denoted the plans of a building in late 16th-century English, and derived via French and Italian ultimately from Latin ''modulus'', a measure. Models c ...

, and experiments to provide a quantitative understanding of the flow phenomenon under investigation.

Research contributions

Stone's studies have been directed toward

heat transfer Heat transfer is a discipline of thermal engineering that concerns the generation, use, conversion, and exchange of thermal energy (heat) between physical systems. Heat transfer is classified into various mechanisms, such as thermal conduction, ...

and

mass transfer Mass transfer is the net movement of mass from one location (usually meaning stream, phase, fraction or component) to another. Mass transfer occurs in many processes, such as absorption, evaporation, drying, precipitation, membrane filtration, ...

problems involving

convection Convection is single or multiphase fluid flow that occurs spontaneously due to the combined effects of material property heterogeneity and body forces on a fluid, most commonly density and gravity (see buoyancy). When the cause of the convec ...

diffusion Diffusion is the net movement of anything (for example, atoms, ions, molecules, energy) generally from a region of higher concentration to a region of lower concentration. Diffusion is driven by a gradient in Gibbs free energy or chemical p ...

and surface reactions. He has made contributions to a wide range of problems involving effects of

surface tension Surface tension is the tendency of liquid surfaces at rest to shrink into the minimum surface area possible. Surface tension is what allows objects with a higher density than water such as razor blades and insects (e.g. water striders) to f ...

buoyancy Buoyancy (), or upthrust, is an upward force exerted by a fluid that opposes the weight of a partially or fully immersed object. In a column of fluid, pressure increases with depth as a result of the weight of the overlying fluid. Thus the p ...

, fluid rotation, and

surfactants Surfactants are chemical compounds that decrease the surface tension between two liquids, between a gas and a liquid, or interfacial tension between a liquid and a solid. Surfactants may act as detergents, wetting agents, emulsion#Emulsifiers , ...

. He has also studied problems concerning the flow of

lipid bilayer The lipid bilayer (or phospholipid bilayer) is a thin polar membrane made of two layers of lipid molecules. These membranes are flat sheets that form a continuous barrier around all cells. The cell membranes of almost all organisms and many vir ...

s and monolayers, and has investigated the motions of particles suspended in such interfacial layers. His research on surfactants has important implications for the dispersal of hydrocarbon pollution in aquatic environments. Recent research has extended his study of fluid dynamics and flow within microchannels to biological applications as well. In 2016 he published 54 papers in first class journals.

Honors and awards

Stone is also committed to undergraduate education an
outreach to the general public
In 1994 he received both the Joseph R. Levenson Memorial Award and the

Phi Beta Kappa The Phi Beta Kappa Society () is the oldest academic honor society in the United States, and the most prestigious, due in part to its long history and academic selectivity. Phi Beta Kappa aims to promote and advocate excellence in the liberal a ...

teaching Prize, which are the only two teaching awards given to faculty in Harvard College. In 2000 he was named a Harvard College Professor for his contributions to undergraduate education. Currently he also serves as an Academic Athletic Fellow for the Princeton University women's basketball team. He was elected a

Fellow of the American Physical Society The American Physical Society honors members with the designation ''Fellow'' for having made significant accomplishments to the field of physics. The following lists are divided chronologically by the year of designation. * List of American Physic ...

in 2003. He was the first recipient of the most prestigious fluid mechanics prize, the

Batchelor Prize The Batchelor Prize is an award presented once every four years by the International Union of Theoretical and Applied Mechanics (IUTAM) for outstanding research in fluid dynamics. The prize of $25,000 is sponsored by the Journal of Fluid Mechanics ...

2008, for best research in fluid mechanics in the last ten years. Stone was elected as a member of the

National Academy of Engineering The National Academy of Engineering (NAE) is an American nonprofit, non-governmental organization. The National Academy of Engineering is part of the National Academies of Sciences, Engineering, and Medicine, along with the National Academy ...

in 2009, a member of the

American Academy of Arts and Sciences The American Academy of Arts and Sciences (abbreviation: AAA&S) is one of the oldest learned societies in the United States. It was founded in 1780 during the American Revolution by John Adams, John Hancock, James Bowdoin, Andrew Oliver, and ...

in 2011, a member of the

National Academy of Sciences The National Academy of Sciences (NAS) is a United States nonprofit, non-governmental organization. NAS is part of the National Academies of Sciences, Engineering, and Medicine, along with the National Academy of Engineering (NAE) and the Nati ...

in 2014, and a member of the

American Philosophical Society The American Philosophical Society (APS), founded in 1743 in Philadelphia, is a scholarly organization that promotes knowledge in the sciences and humanities through research, professional meetings, publications, library resources, and communit ...

in 2022. In 2016, he was awarded the

Fluid Dynamics Prize The Fluid Dynamics Prize is a prize that has been awarded annually by the American Physical Society (APS) since 1979. The recipient is chosen for "outstanding achievement in fluid dynamics research". The prize is currently valued at . In 2004, the ...

by the

American Physical Society The American Physical Society (APS) is a not-for-profit membership organization of professionals in physics and related disciplines, comprising nearly fifty divisions, sections, and other units. Its mission is the advancement and diffusion of k ...

Notable papers

* * *

References

External links

Stone's Princeton MAE webpage

Stone's Princeton CBE webpage

Princeton Complex Fluids Group

Holiday Science Lecture by Howard Stone
* {{DEFAULTSORT:Stone, Howard A. 1960 births Living people University of California, Davis alumni California Institute of Technology alumni Princeton University faculty Harvard University faculty Fluid dynamicists American chemical engineers Place of birth missing (living people) Members of the United States National Academy of Engineering Members of the United States National Academy of Sciences Fellows of the American Physical Society Annual Reviews (publisher) editors Members of the American Philosophical Society