Roy Hays

815 total citations
15 papers, 729 citations indexed

About

Roy Hays is a scholar working on Computational Mechanics, Mechanical Engineering and Ocean Engineering. According to data from OpenAlex, Roy Hays has authored 15 papers receiving a total of 729 indexed citations (citations by other indexed papers that have themselves been cited), including 14 papers in Computational Mechanics, 12 papers in Mechanical Engineering and 5 papers in Ocean Engineering. Recurrent topics in Roy Hays's work include Granular flow and fluidized beds (14 papers), Mineral Processing and Grinding (11 papers) and Cyclone Separators and Fluid Dynamics (9 papers). Roy Hays is often cited by papers focused on Granular flow and fluidized beds (14 papers), Mineral Processing and Grinding (11 papers) and Cyclone Separators and Fluid Dynamics (9 papers). Roy Hays collaborates with scholars based in United States, Canada and United Kingdom. Roy Hays's co-authors include S.B. Reddy Karri, Ray Cocco, T.M. Knowlton, John G. Findlay, Jia Wei Chew, Christine M. Hrenya, Frank Shaffer, Balaji Gopalan, Ronald W. Breault and Jennifer McMillan and has published in prestigious journals such as Chemical Engineering Journal, Chemical Engineering Science and Powder Technology.

In The Last Decade

Roy Hays

15 papers receiving 715 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Roy Hays United States	12	669	323	304	126	43	15	729
B. Formisani Italy	17	773 1.2×	316 1.0×	491 1.6×	190 1.5×	36 0.8×	38	923
M.J.V. Goldschmidt Netherlands	10	962 1.4×	550 1.7×	319 1.0×	146 1.2×	55 1.3×	16	1.0k
John G. Findlay United States	10	452 0.7×	219 0.7×	225 0.7×	100 0.8×	33 0.8×	12	506
Yupeng Xu United States	16	473 0.7×	201 0.6×	212 0.7×	152 1.2×	12 0.3×	22	567
Zhiqing Yu China	14	526 0.8×	165 0.5×	268 0.9×	152 1.2×	36 0.8×	21	618
Musango Lungu China	13	325 0.5×	158 0.5×	138 0.5×	105 0.8×	23 0.5×	25	389
Vikrant Verma Netherlands	11	319 0.5×	145 0.4×	116 0.4×	113 0.9×	16 0.4×	16	379
Yesim Igci United States	5	694 1.0×	448 1.4×	153 0.5×	131 1.0×	5 0.1×	5	766
Yu. S. Teplitskii Belarus	9	325 0.5×	111 0.3×	204 0.7×	113 0.9×	13 0.3×	81	404

Countries citing papers authored by Roy Hays

Since Specialization

Citations

This map shows the geographic impact of Roy Hays's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Roy Hays with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Roy Hays more than expected).

Fields of papers citing papers by Roy Hays

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Roy Hays. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Roy Hays. The network helps show where Roy Hays may publish in the future.

Co-authorship network of co-authors of Roy Hays

This figure shows the co-authorship network connecting the top 25 collaborators of Roy Hays. A scholar is included among the top collaborators of Roy Hays based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Roy Hays. Roy Hays is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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15 of 15 papers shown

Dubrawski, Kristian L., Naoko Ellis, Ray Cocco, et al.. (2016). Solids flux measurements via alternate techniques in a gas-fluidized bed. Chemical Engineering Journal. 306. 306–321. 13 indexed citations

Dubrawski, Kristian L., Naoko Ellis, Ray Cocco, et al.. (2015). Investigation of particle velocity in FCC gas-fluidized beds based on different measurement techniques. Chemical Engineering Science. 127. 310–322. 45 indexed citations

Dubrawski, Kristian L., Naoko Ellis, Ray Cocco, et al.. (2015). Comparison of particle velocity measurement techniques in a fluidized bed operating in the square-nosed slugging flow regime. Powder Technology. 296. 45–52. 17 indexed citations

Cocco, Ray, Jennifer McMillan, Roy Hays, & S.B. Reddy Karri. (2013). Liquid Injection into Fluidized Beds. 2 indexed citations

McMillan, Jennifer, Frank Shaffer, Balaji Gopalan, et al.. (2013). Particle cluster dynamics during fluidization. Chemical Engineering Science. 100. 39–51. 55 indexed citations

Shaffer, Frank, Balaji Gopalan, Ronald W. Breault, et al.. (2013). High speed imaging of particle flow fields in CFB risers. Powder Technology. 242. 86–99. 105 indexed citations

Chew, Jia Wei, Roy Hays, John G. Findlay, et al.. (2011). Cluster characteristics of Geldart Group B particles in a pilot-scale CFB riser. I. Monodisperse systems. Chemical Engineering Science. 68(1). 72–81. 91 indexed citations

Chew, Jia Wei, Roy Hays, John G. Findlay, et al.. (2011). Species segregation of binary mixtures and a continuous size distribution of Group B particles in riser flow. Chemical Engineering Science. 66(20). 4595–4604. 56 indexed citations

Chew, Jia Wei, Roy Hays, John G. Findlay, et al.. (2011). Cluster characteristics of Geldart group B particles in a pilot-scale CFB riser. II. Polydisperse systems. Chemical Engineering Science. 68(1). 82–93. 101 indexed citations

10.

Chew, Jia Wei, Roy Hays, John G. Findlay, et al.. (2011). Reverse core-annular flow of Geldart Group B particles in risers. Powder Technology. 221. 1–12. 36 indexed citations

11.

Chew, Jia Wei, Roy Hays, John G. Findlay, et al.. (2011). Impact of material property and operating conditions on mass flux profiles of monodisperse and polydisperse Group B particles in a CFB riser. Powder Technology. 214(1). 89–98. 33 indexed citations

12.

Cocco, Ray, et al.. (2010). Jet cup attrition testing. Powder Technology. 200(3). 224–233. 43 indexed citations

13.

Cocco, Ray, Frank Shaffer, Roy Hays, S.B. Reddy Karri, & T.M. Knowlton. (2010). Particle clusters in and above fluidized beds. Powder Technology. 203(1). 3–11. 130 indexed citations

14.

Cocco, Ray, Frank Shaffer, S.B. Reddy Karri, Roy Hays, & T.M. Knowlton. (2010). PARTICLE CLUSTERS IN FLUIDIZED BEDS. 1 indexed citations

15.

Cocco, Ray, et al.. (2010). PARTICLE ATTRITION MEASUREMENTS USING A JET CUP. 1 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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